./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --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_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/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_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/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_651316e6-043e-442d-b78f-8fb4abc8d68d/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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:33:59,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:33:59,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:33:59,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:33:59,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:33:59,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:33:59,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:33:59,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:33:59,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:33:59,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:33:59,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:33:59,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:33:59,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:33:59,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:33:59,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:33:59,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:33:59,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:33:59,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:33:59,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:33:59,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:33:59,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:33:59,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:33:59,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:33:59,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:33:59,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:33:59,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:33:59,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:33:59,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:33:59,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:33:59,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:33:59,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:33:59,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:33:59,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:33:59,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:33:59,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:33:59,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:33:59,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:33:59,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:33:59,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:33:59,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:33:59,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:33:59,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:33:59,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:33:59,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:33:59,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:33:59,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:33:59,324 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:33:59,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:33:59,325 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:33:59,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:33:59,325 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:33:59,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:33:59,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:33:59,326 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:33:59,326 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:33:59,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:33:59,327 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:33:59,327 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:33:59,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:33:59,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:33:59,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:33:59,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:33:59,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:33:59,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:33:59,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:33:59,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:33:59,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:33:59,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:33:59,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:33:59,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:33:59,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:33:59,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:33:59,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:33:59,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:33:59,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:33:59,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:33:59,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:33:59,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:33:59,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:33:59,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:33:59,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:33:59,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:33:59,336 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_651316e6-043e-442d-b78f-8fb4abc8d68d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2021-11-13 02:33:59,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:33:59,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:33:59,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:33:59,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:33:59,764 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:33:59,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-13 02:33:59,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/75e1b3602/0a4a38f48ff5421d882f5ee0b1513aa1/FLAGdab3b4094 [2021-11-13 02:34:00,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:34:00,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-13 02:34:00,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/75e1b3602/0a4a38f48ff5421d882f5ee0b1513aa1/FLAGdab3b4094 [2021-11-13 02:34:00,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/75e1b3602/0a4a38f48ff5421d882f5ee0b1513aa1 [2021-11-13 02:34:00,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:34:00,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:34:00,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:00,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:34:00,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:34:00,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:00" (1/1) ... [2021-11-13 02:34:00,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73324b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:00, skipping insertion in model container [2021-11-13 02:34:00,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:00" (1/1) ... [2021-11-13 02:34:00,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:34:00,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:01,025 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_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-13 02:34:01,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:01,050 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) [2021-11-13 02:34:01,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a93d3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:01, skipping insertion in model container [2021-11-13 02:34:01,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:01,052 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:34:01,055 INFO L158 Benchmark]: Toolchain (without parser) took 322.29ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.7MB in the beginning and 85.7MB in the end (delta: -42.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:34:01,056 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:01,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.81ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.4MB in the beginning and 85.7MB in the end (delta: -42.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:34:01,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 60.1MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.81ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.4MB in the beginning and 85.7MB in the end (delta: -42.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 157]: 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_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/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_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/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_651316e6-043e-442d-b78f-8fb4abc8d68d/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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:34:03,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:34:03,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:34:03,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:34:03,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:34:03,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:34:03,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:34:03,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:34:03,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:34:03,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:34:03,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:34:03,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:34:03,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:34:03,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:34:03,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:34:03,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:34:03,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:34:03,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:34:03,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:34:03,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:34:03,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:34:03,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:34:03,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:34:03,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:34:03,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:34:03,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:34:03,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:34:03,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:34:03,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:34:03,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:34:03,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:34:03,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:34:03,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:34:03,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:34:03,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:34:03,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:34:03,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:34:03,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:34:03,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:34:03,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:34:03,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:34:03,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:34:03,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:34:03,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:34:03,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:34:03,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:34:03,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:34:03,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:34:03,990 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:34:03,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:34:03,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:34:03,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:34:03,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:34:03,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:34:03,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:34:03,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:34:03,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:34:03,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:34:03,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:34:03,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:34:03,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:34:03,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:34:03,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:34:03,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:34:03,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:34:03,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:34:03,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:34:03,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:34:03,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:34:03,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:03,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:34:03,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:34:03,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:34:03,998 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:34:03,999 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:34:03,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:34:03,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:34:04,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:34:04,000 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_651316e6-043e-442d-b78f-8fb4abc8d68d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2021-11-13 02:34:04,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:34:04,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:34:04,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:34:04,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:34:04,529 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:34:04,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-13 02:34:04,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/36eb9749a/bef949847b4b442596ecccc3b501dc69/FLAGbf7213323 [2021-11-13 02:34:05,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:34:05,238 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2021-11-13 02:34:05,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/36eb9749a/bef949847b4b442596ecccc3b501dc69/FLAGbf7213323 [2021-11-13 02:34:05,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/data/36eb9749a/bef949847b4b442596ecccc3b501dc69 [2021-11-13 02:34:05,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:34:05,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:34:05,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:05,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:34:05,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:34:05,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:05" (1/1) ... [2021-11-13 02:34:05,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4002d4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:05, skipping insertion in model container [2021-11-13 02:34:05,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:05" (1/1) ... [2021-11-13 02:34:05,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:34:05,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:05,931 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_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-13 02:34:05,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:06,002 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:34:06,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:06,059 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_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-13 02:34:06,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:06,091 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:34:06,151 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_651316e6-043e-442d-b78f-8fb4abc8d68d/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2021-11-13 02:34:06,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:06,196 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:34:06,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06 WrapperNode [2021-11-13 02:34:06,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:06,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:06,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:34:06,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:34:06,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:06,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:34:06,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:34:06,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:34:06,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:34:06,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:34:06,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:34:06,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:34:06,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (1/1) ... [2021-11-13 02:34:06,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:34:06,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:34:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:34:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:34:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:34:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:34:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-13 02:34:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-13 02:34:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-13 02:34:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-13 02:34:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-13 02:34:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-13 02:34:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-13 02:34:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-13 02:34:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 02:34:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 02:34:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:34:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:34:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:34:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:34:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:34:06,472 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 02:34:07,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:34:07,681 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-13 02:34:07,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:07 BoogieIcfgContainer [2021-11-13 02:34:07,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:34:07,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:34:07,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:34:07,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:34:07,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:34:05" (1/3) ... [2021-11-13 02:34:07,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2b5db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:34:07, skipping insertion in model container [2021-11-13 02:34:07,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:06" (2/3) ... [2021-11-13 02:34:07,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2b5db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:34:07, skipping insertion in model container [2021-11-13 02:34:07,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:07" (3/3) ... [2021-11-13 02:34:07,697 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2021-11-13 02:34:07,704 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 02:34:07,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:34:07,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:34:07,705 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 02:34:07,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,782 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,782 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,783 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,783 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,783 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,786 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,787 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,787 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,787 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,787 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,788 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,789 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,793 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,794 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,797 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,799 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,800 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,800 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,800 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,802 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,803 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,803 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,803 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,810 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,810 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,811 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,811 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,811 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,811 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,812 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,813 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,816 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,819 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,819 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,819 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,819 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,820 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,820 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,820 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,820 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,820 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,821 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,828 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,829 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_~cond~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,830 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,831 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,832 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,832 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,832 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,833 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,834 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,835 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_~cond~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,836 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,837 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_~cond~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:34:07,846 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-13 02:34:07,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:34:07,923 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 [2021-11-13 02:34:07,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-13 02:34:07,949 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:34:07,971 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 221 transitions, 474 flow [2021-11-13 02:34:07,974 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 221 transitions, 474 flow [2021-11-13 02:34:07,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 216 places, 221 transitions, 474 flow [2021-11-13 02:34:08,123 INFO L129 PetriNetUnfolder]: 18/217 cut-off events. [2021-11-13 02:34:08,127 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-13 02:34:08,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 217 events. 18/217 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 108 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 178. Up to 2 conditions per place. [2021-11-13 02:34:08,144 INFO L116 LiptonReduction]: Number of co-enabled transitions 1824 [2021-11-13 02:34:40,394 INFO L131 LiptonReduction]: Checked pairs total: 3117 [2021-11-13 02:34:40,394 INFO L133 LiptonReduction]: Total number of compositions: 210 [2021-11-13 02:34:40,408 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 40 transitions, 112 flow [2021-11-13 02:34:40,481 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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) [2021-11-13 02:34:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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) [2021-11-13 02:34:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 02:34:40,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:40,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:34:40,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:40,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1205792343, now seen corresponding path program 1 times [2021-11-13 02:34:40,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:40,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650768975] [2021-11-13 02:34:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:40,543 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:40,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:40,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:40,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:34:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:40,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:34:40,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:40,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:41,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:41,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650768975] [2021-11-13 02:34:41,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650768975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:41,120 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:41,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-13 02:34:41,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992300302] [2021-11-13 02:34:41,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:41,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:34:41,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:41,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:34:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:41,167 INFO L87 Difference]: Start difference. First operand has 526 states, 525 states have (on average 4.102857142857143) internal successors, (2154), 525 states have internal predecessors, (2154), 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) Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:41,471 INFO L93 Difference]: Finished difference Result 777 states and 3199 transitions. [2021-11-13 02:34:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 02:34:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:41,509 INFO L225 Difference]: With dead ends: 777 [2021-11-13 02:34:41,509 INFO L226 Difference]: Without dead ends: 748 [2021-11-13 02:34:41,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:34:41,515 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:41,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 48 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 240.27ms Time] [2021-11-13 02:34:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-13 02:34:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-11-13 02:34:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 4.127175368139223) internal successors, (3083), 747 states have internal predecessors, (3083), 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) [2021-11-13 02:34:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 3083 transitions. [2021-11-13 02:34:41,656 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 3083 transitions. Word has length 27 [2021-11-13 02:34:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:41,658 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 3083 transitions. [2021-11-13 02:34:41,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 3083 transitions. [2021-11-13 02:34:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-13 02:34:41,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:41,664 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] [2021-11-13 02:34:41,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:41,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:41,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:41,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1576095319, now seen corresponding path program 1 times [2021-11-13 02:34:41,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:41,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861616375] [2021-11-13 02:34:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:41,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:41,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:41,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:34:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:42,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:42,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:42,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861616375] [2021-11-13 02:34:42,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861616375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:42,517 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:42,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:34:42,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958020648] [2021-11-13 02:34:42,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:42,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:34:42,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:34:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:42,521 INFO L87 Difference]: Start difference. First operand 748 states and 3083 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-13 02:34:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:42,868 INFO L93 Difference]: Finished difference Result 1102 states and 4351 transitions. [2021-11-13 02:34:42,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 29 [2021-11-13 02:34:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:42,884 INFO L225 Difference]: With dead ends: 1102 [2021-11-13 02:34:42,884 INFO L226 Difference]: Without dead ends: 1072 [2021-11-13 02:34:42,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:42,887 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:42,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11 Invalid, 76 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 313.56ms Time] [2021-11-13 02:34:42,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-13 02:34:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 978. [2021-11-13 02:34:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 4.048106448311157) internal successors, (3955), 977 states have internal predecessors, (3955), 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) [2021-11-13 02:34:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 3955 transitions. [2021-11-13 02:34:42,989 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 3955 transitions. Word has length 29 [2021-11-13 02:34:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:42,989 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 3955 transitions. [2021-11-13 02:34:42,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-13 02:34:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 3955 transitions. [2021-11-13 02:34:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-13 02:34:42,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:42,996 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] [2021-11-13 02:34:43,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:43,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:43,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 282808547, now seen corresponding path program 1 times [2021-11-13 02:34:43,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:43,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79281973] [2021-11-13 02:34:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:43,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:43,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:43,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:34:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:43,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:34:43,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:43,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:34:43,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:43,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79281973] [2021-11-13 02:34:43,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79281973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:43,776 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:43,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 02:34:43,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105546486] [2021-11-13 02:34:43,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:43,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:34:43,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:34:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:43,778 INFO L87 Difference]: Start difference. First operand 978 states and 3955 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:44,108 INFO L93 Difference]: Finished difference Result 1328 states and 5114 transitions. [2021-11-13 02:34:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:34:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-13 02:34:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:44,125 INFO L225 Difference]: With dead ends: 1328 [2021-11-13 02:34:44,126 INFO L226 Difference]: Without dead ends: 1270 [2021-11-13 02:34:44,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:34:44,127 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.33ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:44,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 80 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 298.33ms Time] [2021-11-13 02:34:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-13 02:34:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1148. [2021-11-13 02:34:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.96512641673932) internal successors, (4548), 1147 states have internal predecessors, (4548), 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) [2021-11-13 02:34:44,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4548 transitions. [2021-11-13 02:34:44,202 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4548 transitions. Word has length 29 [2021-11-13 02:34:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:44,202 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 4548 transitions. [2021-11-13 02:34:44,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:34:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4548 transitions. [2021-11-13 02:34:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 02:34:44,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:44,210 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] [2021-11-13 02:34:44,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:44,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:44,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash 860123217, now seen corresponding path program 1 times [2021-11-13 02:34:44,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:44,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99727409] [2021-11-13 02:34:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:44,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:44,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:44,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:44,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:34:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:44,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:34:44,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:34:44,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:34:45,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:45,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99727409] [2021-11-13 02:34:45,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99727409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:45,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:45,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:34:45,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868557251] [2021-11-13 02:34:45,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:45,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:34:45,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:34:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:34:45,029 INFO L87 Difference]: Start difference. First operand 1148 states and 4548 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-13 02:34:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:45,353 INFO L93 Difference]: Finished difference Result 1736 states and 6557 transitions. [2021-11-13 02:34:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:34:45,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 30 [2021-11-13 02:34:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:45,376 INFO L225 Difference]: With dead ends: 1736 [2021-11-13 02:34:45,376 INFO L226 Difference]: Without dead ends: 1646 [2021-11-13 02:34:45,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:34:45,378 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 98 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:45,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 12 Invalid, 60 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 265.31ms Time] [2021-11-13 02:34:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2021-11-13 02:34:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1458. [2021-11-13 02:34:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9306794783802332) internal successors, (5727), 1457 states have internal predecessors, (5727), 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) [2021-11-13 02:34:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5727 transitions. [2021-11-13 02:34:45,502 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5727 transitions. Word has length 30 [2021-11-13 02:34:45,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:45,502 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5727 transitions. [2021-11-13 02:34:45,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-11-13 02:34:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5727 transitions. [2021-11-13 02:34:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 02:34:45,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:45,511 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] [2021-11-13 02:34:45,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:45,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:45,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1369922742, now seen corresponding path program 1 times [2021-11-13 02:34:45,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:45,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884899702] [2021-11-13 02:34:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:45,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:45,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:45,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:45,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:34:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:45,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:34:45,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:34:46,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:34:46,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:46,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884899702] [2021-11-13 02:34:46,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884899702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:46,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:46,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 02:34:46,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540774587] [2021-11-13 02:34:46,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:46,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:34:46,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:34:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:34:46,257 INFO L87 Difference]: Start difference. First operand 1458 states and 5727 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-13 02:34:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:46,662 INFO L93 Difference]: Finished difference Result 2071 states and 7785 transitions. [2021-11-13 02:34:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:34:46,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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 30 [2021-11-13 02:34:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:46,690 INFO L225 Difference]: With dead ends: 2071 [2021-11-13 02:34:46,690 INFO L226 Difference]: Without dead ends: 1942 [2021-11-13 02:34:46,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:34:46,691 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 355.13ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:46,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 24 Invalid, 116 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 355.13ms Time] [2021-11-13 02:34:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-11-13 02:34:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1698. [2021-11-13 02:34:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 3.9133765468473776) internal successors, (6641), 1697 states have internal predecessors, (6641), 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) [2021-11-13 02:34:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 6641 transitions. [2021-11-13 02:34:46,800 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 6641 transitions. Word has length 30 [2021-11-13 02:34:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:46,801 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 6641 transitions. [2021-11-13 02:34:46,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-13 02:34:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 6641 transitions. [2021-11-13 02:34:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:34:46,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:46,811 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] [2021-11-13 02:34:46,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:47,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:47,031 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 436227517, now seen corresponding path program 1 times [2021-11-13 02:34:47,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:47,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224059270] [2021-11-13 02:34:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:47,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:47,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:47,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:34:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:34:47,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:34:47,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:47,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:47,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:47,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224059270] [2021-11-13 02:34:47,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224059270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:47,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:47,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:34:47,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183752351] [2021-11-13 02:34:47,845 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:47,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:34:47,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:47,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:34:47,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:34:47,847 INFO L87 Difference]: Start difference. First operand 1698 states and 6641 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-11-13 02:34:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:49,913 INFO L93 Difference]: Finished difference Result 2344 states and 8980 transitions. [2021-11-13 02:34:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:34:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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 31 [2021-11-13 02:34:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:49,943 INFO L225 Difference]: With dead ends: 2344 [2021-11-13 02:34:49,944 INFO L226 Difference]: Without dead ends: 2278 [2021-11-13 02:34:49,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:34:49,945 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 264 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1341.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1568.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:49,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 3 Invalid, 531 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [10 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1568.79ms Time] [2021-11-13 02:34:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2021-11-13 02:34:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1760. [2021-11-13 02:34:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 3.8743604320636726) internal successors, (6815), 1759 states have internal predecessors, (6815), 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) [2021-11-13 02:34:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 6815 transitions. [2021-11-13 02:34:50,057 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 6815 transitions. Word has length 31 [2021-11-13 02:34:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:50,057 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 6815 transitions. [2021-11-13 02:34:50,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-11-13 02:34:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 6815 transitions. [2021-11-13 02:34:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:34:50,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:50,081 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] [2021-11-13 02:34:50,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:50,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:50,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1678498933, now seen corresponding path program 2 times [2021-11-13 02:34:50,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:50,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36482892] [2021-11-13 02:34:50,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:34:50,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:50,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:50,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:34:50,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:34:50,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:34:50,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:34:50,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:51,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:51,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:51,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36482892] [2021-11-13 02:34:51,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36482892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:51,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:51,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:34:51,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862175896] [2021-11-13 02:34:51,341 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:51,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:34:51,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:51,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:34:51,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:34:51,343 INFO L87 Difference]: Start difference. First operand 1760 states and 6815 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-11-13 02:34:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:53,571 INFO L93 Difference]: Finished difference Result 3294 states and 12085 transitions. [2021-11-13 02:34:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 02:34:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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 31 [2021-11-13 02:34:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:53,616 INFO L225 Difference]: With dead ends: 3294 [2021-11-13 02:34:53,616 INFO L226 Difference]: Without dead ends: 3244 [2021-11-13 02:34:53,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:34:53,618 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 409 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1392.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.70ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1652.85ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:53,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 6 Invalid, 661 Unknown, 0 Unchecked, 7.70ms Time], IncrementalHoareTripleChecker [20 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1652.85ms Time] [2021-11-13 02:34:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2021-11-13 02:34:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1898. [2021-11-13 02:34:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1897 states have (on average 3.9140748550342646) internal successors, (7425), 1897 states have internal predecessors, (7425), 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) [2021-11-13 02:34:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 7425 transitions. [2021-11-13 02:34:53,757 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 7425 transitions. Word has length 31 [2021-11-13 02:34:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:53,758 INFO L470 AbstractCegarLoop]: Abstraction has 1898 states and 7425 transitions. [2021-11-13 02:34:53,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 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) [2021-11-13 02:34:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 7425 transitions. [2021-11-13 02:34:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:34:53,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:53,768 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] [2021-11-13 02:34:53,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:53,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:53,989 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:53,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1597232823, now seen corresponding path program 3 times [2021-11-13 02:34:53,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:53,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577018275] [2021-11-13 02:34:53,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:34:53,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:53,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:53,992 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:54,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:34:54,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:34:54,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:34:54,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:34:54,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:54,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:54,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:54,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577018275] [2021-11-13 02:34:54,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577018275] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:34:54,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:34:54,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:34:54,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121187473] [2021-11-13 02:34:54,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:54,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:34:54,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:34:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:34:54,909 INFO L87 Difference]: Start difference. First operand 1898 states and 7425 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:34:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:56,005 INFO L93 Difference]: Finished difference Result 2690 states and 10031 transitions. [2021-11-13 02:34:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:34:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:34:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:56,034 INFO L225 Difference]: With dead ends: 2690 [2021-11-13 02:34:56,034 INFO L226 Difference]: Without dead ends: 2402 [2021-11-13 02:34:56,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:34:56,035 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 145 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 821.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 954.12ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:56,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 2 Invalid, 378 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [6 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 954.12ms Time] [2021-11-13 02:34:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-11-13 02:34:56,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1814. [2021-11-13 02:34:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 3.8687258687258685) internal successors, (7014), 1813 states have internal predecessors, (7014), 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) [2021-11-13 02:34:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 7014 transitions. [2021-11-13 02:34:56,146 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 7014 transitions. Word has length 31 [2021-11-13 02:34:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:56,147 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 7014 transitions. [2021-11-13 02:34:56,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:34:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 7014 transitions. [2021-11-13 02:34:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:34:56,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:56,158 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] [2021-11-13 02:34:56,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:56,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:56,379 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1765863631, now seen corresponding path program 4 times [2021-11-13 02:34:56,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:56,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703390739] [2021-11-13 02:34:56,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:34:56,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:56,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:56,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:34:56,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:34:56,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:34:56,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:34:56,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:34:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:56,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:34:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:34:57,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:34:57,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703390739] [2021-11-13 02:34:57,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703390739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:34:57,282 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:34:57,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-13 02:34:57,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549995232] [2021-11-13 02:34:57,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:34:57,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:34:57,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:34:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:34:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:34:57,284 INFO L87 Difference]: Start difference. First operand 1814 states and 7014 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2021-11-13 02:34:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:34:59,417 INFO L93 Difference]: Finished difference Result 3758 states and 13358 transitions. [2021-11-13 02:34:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:34:59,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 31 [2021-11-13 02:34:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:34:59,452 INFO L225 Difference]: With dead ends: 3758 [2021-11-13 02:34:59,453 INFO L226 Difference]: Without dead ends: 3572 [2021-11-13 02:34:59,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:34:59,454 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 299 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1475.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.99ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1680.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:34:59,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 11 Invalid, 775 Unknown, 0 Unchecked, 7.99ms Time], IncrementalHoareTripleChecker [16 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1680.77ms Time] [2021-11-13 02:34:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2021-11-13 02:34:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 1820. [2021-11-13 02:34:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1819 states have (on average 3.8823529411764706) internal successors, (7062), 1819 states have internal predecessors, (7062), 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) [2021-11-13 02:34:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 7062 transitions. [2021-11-13 02:34:59,611 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 7062 transitions. Word has length 31 [2021-11-13 02:34:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:34:59,612 INFO L470 AbstractCegarLoop]: Abstraction has 1820 states and 7062 transitions. [2021-11-13 02:34:59,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2021-11-13 02:34:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 7062 transitions. [2021-11-13 02:34:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:34:59,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:59,623 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] [2021-11-13 02:34:59,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:34:59,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:34:59,838 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:34:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1178826571, now seen corresponding path program 5 times [2021-11-13 02:34:59,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:34:59,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048670832] [2021-11-13 02:34:59,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 02:34:59,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:34:59,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:34:59,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:34:59,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:35:00,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:00,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:00,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:35:00,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:00,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:00,952 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:00,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048670832] [2021-11-13 02:35:00,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048670832] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:00,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:00,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-11-13 02:35:00,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784964556] [2021-11-13 02:35:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:00,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:00,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:35:00,954 INFO L87 Difference]: Start difference. First operand 1820 states and 7062 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:01,781 INFO L93 Difference]: Finished difference Result 1836 states and 7072 transitions. [2021-11-13 02:35:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:35:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:01,811 INFO L225 Difference]: With dead ends: 1836 [2021-11-13 02:35:01,811 INFO L226 Difference]: Without dead ends: 1768 [2021-11-13 02:35:01,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:35:01,812 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 631.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 710.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:01,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2 Invalid, 295 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 710.20ms Time] [2021-11-13 02:35:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-13 02:35:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1746. [2021-11-13 02:35:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 3.8796561604584525) internal successors, (6770), 1745 states have internal predecessors, (6770), 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) [2021-11-13 02:35:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 6770 transitions. [2021-11-13 02:35:01,883 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 6770 transitions. Word has length 31 [2021-11-13 02:35:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:01,884 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 6770 transitions. [2021-11-13 02:35:01,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:01,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 6770 transitions. [2021-11-13 02:35:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:01,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:01,891 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] [2021-11-13 02:35:01,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:02,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:02,109 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1834079873, now seen corresponding path program 6 times [2021-11-13 02:35:02,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:02,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298533058] [2021-11-13 02:35:02,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 02:35:02,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:02,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:02,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:02,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:35:02,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-13 02:35:02,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:02,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:03,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:03,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298533058] [2021-11-13 02:35:03,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298533058] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:03,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:03,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:03,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052328539] [2021-11-13 02:35:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:03,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:03,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:03,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:03,120 INFO L87 Difference]: Start difference. First operand 1746 states and 6770 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:04,851 INFO L93 Difference]: Finished difference Result 3592 states and 12819 transitions. [2021-11-13 02:35:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:35:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:04,870 INFO L225 Difference]: With dead ends: 3592 [2021-11-13 02:35:04,870 INFO L226 Difference]: Without dead ends: 3456 [2021-11-13 02:35:04,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:35:04,872 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 226 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1137.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1307.65ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:04,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 2 Invalid, 422 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [21 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1307.65ms Time] [2021-11-13 02:35:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2021-11-13 02:35:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 1792. [2021-11-13 02:35:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1791 states have (on average 3.896147403685092) internal successors, (6978), 1791 states have internal predecessors, (6978), 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) [2021-11-13 02:35:05,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 6978 transitions. [2021-11-13 02:35:05,041 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 6978 transitions. Word has length 31 [2021-11-13 02:35:05,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:05,042 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 6978 transitions. [2021-11-13 02:35:05,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 6978 transitions. [2021-11-13 02:35:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:05,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:05,050 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] [2021-11-13 02:35:05,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:05,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:05,267 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:05,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 691023703, now seen corresponding path program 7 times [2021-11-13 02:35:05,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:05,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667018218] [2021-11-13 02:35:05,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:35:05,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:05,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:05,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:05,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:35:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:05,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:05,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:06,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:06,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667018218] [2021-11-13 02:35:06,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667018218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:06,212 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:06,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:35:06,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968599217] [2021-11-13 02:35:06,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:06,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:35:06,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:35:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:06,213 INFO L87 Difference]: Start difference. First operand 1792 states and 6978 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:08,968 INFO L93 Difference]: Finished difference Result 3198 states and 11733 transitions. [2021-11-13 02:35:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 02:35:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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 31 [2021-11-13 02:35:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:08,987 INFO L225 Difference]: With dead ends: 3198 [2021-11-13 02:35:08,987 INFO L226 Difference]: Without dead ends: 3108 [2021-11-13 02:35:08,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:35:08,989 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 275 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1675.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1933.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:08,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 4 Invalid, 737 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [29 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1933.20ms Time] [2021-11-13 02:35:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-13 02:35:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 1750. [2021-11-13 02:35:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1749 states have (on average 3.898227558604917) internal successors, (6818), 1749 states have internal predecessors, (6818), 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) [2021-11-13 02:35:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 6818 transitions. [2021-11-13 02:35:09,101 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 6818 transitions. Word has length 31 [2021-11-13 02:35:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:09,102 INFO L470 AbstractCegarLoop]: Abstraction has 1750 states and 6818 transitions. [2021-11-13 02:35:09,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 6818 transitions. [2021-11-13 02:35:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:09,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:09,109 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] [2021-11-13 02:35:09,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:09,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:09,325 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2092040215, now seen corresponding path program 8 times [2021-11-13 02:35:09,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:09,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436663629] [2021-11-13 02:35:09,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:35:09,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:09,328 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:09,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:35:09,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:09,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:09,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:09,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:10,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:10,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:10,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436663629] [2021-11-13 02:35:10,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436663629] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:10,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:10,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:10,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017145474] [2021-11-13 02:35:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:10,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:10,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:10,369 INFO L87 Difference]: Start difference. First operand 1750 states and 6818 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:11,574 INFO L93 Difference]: Finished difference Result 2518 states and 9187 transitions. [2021-11-13 02:35:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:35:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:11,587 INFO L225 Difference]: With dead ends: 2518 [2021-11-13 02:35:11,587 INFO L226 Difference]: Without dead ends: 2382 [2021-11-13 02:35:11,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:35:11,589 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 99 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 841.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 963.96ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:11,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 9 Invalid, 407 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [10 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 963.96ms Time] [2021-11-13 02:35:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2021-11-13 02:35:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1562. [2021-11-13 02:35:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 3.8558616271620756) internal successors, (6019), 1561 states have internal predecessors, (6019), 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) [2021-11-13 02:35:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 6019 transitions. [2021-11-13 02:35:11,686 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 6019 transitions. Word has length 31 [2021-11-13 02:35:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:11,686 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 6019 transitions. [2021-11-13 02:35:11,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 6019 transitions. [2021-11-13 02:35:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:11,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:11,692 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] [2021-11-13 02:35:11,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:11,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:11,912 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:11,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1312360855, now seen corresponding path program 9 times [2021-11-13 02:35:11,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:11,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882240275] [2021-11-13 02:35:11,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:35:11,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:11,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:11,915 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:11,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:35:12,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:35:12,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:12,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:12,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:12,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:12,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:12,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882240275] [2021-11-13 02:35:12,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882240275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:12,814 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:12,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:35:12,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514471027] [2021-11-13 02:35:12,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:12,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:35:12,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:35:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:12,816 INFO L87 Difference]: Start difference. First operand 1562 states and 6019 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:15,565 INFO L93 Difference]: Finished difference Result 2992 states and 10860 transitions. [2021-11-13 02:35:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 02:35:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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 31 [2021-11-13 02:35:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:15,579 INFO L225 Difference]: With dead ends: 2992 [2021-11-13 02:35:15,579 INFO L226 Difference]: Without dead ends: 2918 [2021-11-13 02:35:15,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 02:35:15,580 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1474.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.97ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1714.54ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:15,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 9.97ms Time], IncrementalHoareTripleChecker [45 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1714.54ms Time] [2021-11-13 02:35:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-11-13 02:35:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1516. [2021-11-13 02:35:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.8316831683168315) internal successors, (5805), 1515 states have internal predecessors, (5805), 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) [2021-11-13 02:35:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5805 transitions. [2021-11-13 02:35:15,711 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5805 transitions. Word has length 31 [2021-11-13 02:35:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:15,712 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 5805 transitions. [2021-11-13 02:35:15,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5805 transitions. [2021-11-13 02:35:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:15,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:15,719 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] [2021-11-13 02:35:15,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:15,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:15,935 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1974813591, now seen corresponding path program 10 times [2021-11-13 02:35:15,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:15,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534751291] [2021-11-13 02:35:15,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:35:15,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:15,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:15,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:15,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 02:35:16,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:35:16,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:16,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:16,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:16,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:16,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534751291] [2021-11-13 02:35:16,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534751291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:16,780 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:16,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:35:16,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103149726] [2021-11-13 02:35:16,781 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:16,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:35:16,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:35:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:16,782 INFO L87 Difference]: Start difference. First operand 1516 states and 5805 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2021-11-13 02:35:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:18,454 INFO L93 Difference]: Finished difference Result 1842 states and 7061 transitions. [2021-11-13 02:35:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:35:18,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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 31 [2021-11-13 02:35:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:18,459 INFO L225 Difference]: With dead ends: 1842 [2021-11-13 02:35:18,460 INFO L226 Difference]: Without dead ends: 1743 [2021-11-13 02:35:18,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-13 02:35:18,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1126.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1299.16ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:18,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 673 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [14 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 1299.16ms Time] [2021-11-13 02:35:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2021-11-13 02:35:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1311. [2021-11-13 02:35:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1310 states have (on average 3.9129770992366413) internal successors, (5126), 1310 states have internal predecessors, (5126), 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) [2021-11-13 02:35:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 5126 transitions. [2021-11-13 02:35:18,517 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 5126 transitions. Word has length 31 [2021-11-13 02:35:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:18,517 INFO L470 AbstractCegarLoop]: Abstraction has 1311 states and 5126 transitions. [2021-11-13 02:35:18,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 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) [2021-11-13 02:35:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 5126 transitions. [2021-11-13 02:35:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:18,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:18,523 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] [2021-11-13 02:35:18,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:18,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:18,739 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash -456837909, now seen corresponding path program 1 times [2021-11-13 02:35:18,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:18,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765492551] [2021-11-13 02:35:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:18,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:18,741 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:18,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:35:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:18,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:18,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:19,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:19,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:19,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765492551] [2021-11-13 02:35:19,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765492551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:19,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:19,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:35:19,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357805654] [2021-11-13 02:35:19,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:19,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:35:19,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:35:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:19,562 INFO L87 Difference]: Start difference. First operand 1311 states and 5126 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:21,769 INFO L93 Difference]: Finished difference Result 3269 states and 12722 transitions. [2021-11-13 02:35:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 02:35:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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 31 [2021-11-13 02:35:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:21,779 INFO L225 Difference]: With dead ends: 3269 [2021-11-13 02:35:21,779 INFO L226 Difference]: Without dead ends: 3237 [2021-11-13 02:35:21,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:35:21,780 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 382 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1374.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1587.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:21,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 5 Invalid, 693 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [43 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1587.79ms Time] [2021-11-13 02:35:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3237 states. [2021-11-13 02:35:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3237 to 1463. [2021-11-13 02:35:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1462 states have (on average 3.9945280437756496) internal successors, (5840), 1462 states have internal predecessors, (5840), 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) [2021-11-13 02:35:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 5840 transitions. [2021-11-13 02:35:21,864 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 5840 transitions. Word has length 31 [2021-11-13 02:35:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:21,864 INFO L470 AbstractCegarLoop]: Abstraction has 1463 states and 5840 transitions. [2021-11-13 02:35:21,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2021-11-13 02:35:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 5840 transitions. [2021-11-13 02:35:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:21,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:21,871 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] [2021-11-13 02:35:21,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:22,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:22,086 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:22,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:22,087 INFO L85 PathProgramCache]: Analyzing trace with hash -812415901, now seen corresponding path program 2 times [2021-11-13 02:35:22,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:22,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294149232] [2021-11-13 02:35:22,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:35:22,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:22,089 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:22,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 02:35:22,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:22,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:22,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:22,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:22,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:22,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:22,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294149232] [2021-11-13 02:35:22,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294149232] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:22,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:22,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:22,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811991857] [2021-11-13 02:35:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:22,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:22,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:22,918 INFO L87 Difference]: Start difference. First operand 1463 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:24,108 INFO L93 Difference]: Finished difference Result 2735 states and 10423 transitions. [2021-11-13 02:35:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:35:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:24,116 INFO L225 Difference]: With dead ends: 2735 [2021-11-13 02:35:24,116 INFO L226 Difference]: Without dead ends: 2579 [2021-11-13 02:35:24,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:35:24,117 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 158 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 798.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 920.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:24,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 3 Invalid, 349 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [11 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 920.61ms Time] [2021-11-13 02:35:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2021-11-13 02:35:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 1749. [2021-11-13 02:35:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1748 states have (on average 4.077803203661327) internal successors, (7128), 1748 states have internal predecessors, (7128), 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) [2021-11-13 02:35:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 7128 transitions. [2021-11-13 02:35:24,195 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 7128 transitions. Word has length 31 [2021-11-13 02:35:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:24,195 INFO L470 AbstractCegarLoop]: Abstraction has 1749 states and 7128 transitions. [2021-11-13 02:35:24,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 7128 transitions. [2021-11-13 02:35:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:24,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:24,202 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] [2021-11-13 02:35:24,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:24,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:24,416 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1613401681, now seen corresponding path program 3 times [2021-11-13 02:35:24,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:24,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153974400] [2021-11-13 02:35:24,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:35:24,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:24,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:24,418 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:24,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 02:35:24,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:35:24,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:24,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:35:24,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:25,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:25,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:25,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153974400] [2021-11-13 02:35:25,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153974400] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:25,424 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:25,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-13 02:35:25,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812712916] [2021-11-13 02:35:25,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:25,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:35:25,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:35:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:25,428 INFO L87 Difference]: Start difference. First operand 1749 states and 7128 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-11-13 02:35:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:28,549 INFO L93 Difference]: Finished difference Result 4877 states and 19765 transitions. [2021-11-13 02:35:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-13 02:35:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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 31 [2021-11-13 02:35:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:28,590 INFO L225 Difference]: With dead ends: 4877 [2021-11-13 02:35:28,591 INFO L226 Difference]: Without dead ends: 4771 [2021-11-13 02:35:28,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2021-11-13 02:35:28,592 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 211 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1768.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.12ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2042.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 11 Invalid, 976 Unknown, 0 Unchecked, 6.12ms Time], IncrementalHoareTripleChecker [30 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 2042.64ms Time] [2021-11-13 02:35:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-11-13 02:35:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 2353. [2021-11-13 02:35:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2352 states have (on average 4.132227891156463) internal successors, (9719), 2352 states have internal predecessors, (9719), 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) [2021-11-13 02:35:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 9719 transitions. [2021-11-13 02:35:28,687 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 9719 transitions. Word has length 31 [2021-11-13 02:35:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:28,688 INFO L470 AbstractCegarLoop]: Abstraction has 2353 states and 9719 transitions. [2021-11-13 02:35:28,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-11-13 02:35:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 9719 transitions. [2021-11-13 02:35:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:28,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:28,697 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] [2021-11-13 02:35:28,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:28,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:28,914 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1435830975, now seen corresponding path program 4 times [2021-11-13 02:35:28,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:28,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353112469] [2021-11-13 02:35:28,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:35:28,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:28,916 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:28,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:35:29,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:35:29,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:29,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:29,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:29,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353112469] [2021-11-13 02:35:29,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353112469] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:29,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:29,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:29,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827414481] [2021-11-13 02:35:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:29,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:29,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:29,753 INFO L87 Difference]: Start difference. First operand 2353 states and 9719 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:30,823 INFO L93 Difference]: Finished difference Result 3303 states and 12852 transitions. [2021-11-13 02:35:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:35:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:30,832 INFO L225 Difference]: With dead ends: 3303 [2021-11-13 02:35:30,832 INFO L226 Difference]: Without dead ends: 2843 [2021-11-13 02:35:30,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:35:30,833 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 124 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 802.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 917.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:30,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 2 Invalid, 293 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 917.27ms Time] [2021-11-13 02:35:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2021-11-13 02:35:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1935. [2021-11-13 02:35:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 4.046535677352637) internal successors, (7826), 1934 states have internal predecessors, (7826), 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) [2021-11-13 02:35:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 7826 transitions. [2021-11-13 02:35:30,906 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 7826 transitions. Word has length 31 [2021-11-13 02:35:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:30,906 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 7826 transitions. [2021-11-13 02:35:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 7826 transitions. [2021-11-13 02:35:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:30,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:30,914 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] [2021-11-13 02:35:30,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:31,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:31,128 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 154959945, now seen corresponding path program 5 times [2021-11-13 02:35:31,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:31,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771838702] [2021-11-13 02:35:31,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 02:35:31,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:31,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:31,130 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:31,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 02:35:31,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:31,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:31,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:35:31,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:31,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:32,237 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:32,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771838702] [2021-11-13 02:35:32,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771838702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:32,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [119263240] [2021-11-13 02:35:32,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 02:35:32,238 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:35:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:35:32,239 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:35:32,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-13 02:35:32,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:32,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 02:35:32,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:33,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:33,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [119263240] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:33,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520381937] [2021-11-13 02:35:33,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 02:35:33,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:33,735 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 02:35:33,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:33,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:33,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 02:35:33,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:34,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:34,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520381937] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:34,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-13 02:35:34,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 7, 8, 9, 7] total 30 [2021-11-13 02:35:34,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534335146] [2021-11-13 02:35:34,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:34,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:35:34,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:34,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:35:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-11-13 02:35:34,921 INFO L87 Difference]: Start difference. First operand 1935 states and 7826 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-11-13 02:35:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:36,937 INFO L93 Difference]: Finished difference Result 4097 states and 15119 transitions. [2021-11-13 02:35:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:35:36,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:36,948 INFO L225 Difference]: With dead ends: 4097 [2021-11-13 02:35:36,948 INFO L226 Difference]: Without dead ends: 3965 [2021-11-13 02:35:36,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=373, Invalid=1433, Unknown=0, NotChecked=0, Total=1806 [2021-11-13 02:35:36,950 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 292 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1234.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.04ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1427.67ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:36,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 5 Invalid, 611 Unknown, 0 Unchecked, 4.04ms Time], IncrementalHoareTripleChecker [20 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1427.67ms Time] [2021-11-13 02:35:36,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2021-11-13 02:35:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 2035. [2021-11-13 02:35:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 2034 states have (on average 4.037856440511308) internal successors, (8213), 2034 states have internal predecessors, (8213), 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) [2021-11-13 02:35:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 8213 transitions. [2021-11-13 02:35:37,046 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 8213 transitions. Word has length 31 [2021-11-13 02:35:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:37,047 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 8213 transitions. [2021-11-13 02:35:37,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 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) [2021-11-13 02:35:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 8213 transitions. [2021-11-13 02:35:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:37,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:37,055 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] [2021-11-13 02:35:37,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:37,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:37,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:37,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:37,675 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1663792627, now seen corresponding path program 6 times [2021-11-13 02:35:37,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:37,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375617782] [2021-11-13 02:35:37,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 02:35:37,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:37,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:37,677 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:37,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:35:37,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-11-13 02:35:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:37,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:37,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:38,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 02:35:38,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:38,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375617782] [2021-11-13 02:35:38,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375617782] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:38,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:38,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:38,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520267160] [2021-11-13 02:35:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:38,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:38,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:38,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:38,535 INFO L87 Difference]: Start difference. First operand 2035 states and 8213 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:40,005 INFO L93 Difference]: Finished difference Result 3421 states and 13014 transitions. [2021-11-13 02:35:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:35:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:40,015 INFO L225 Difference]: With dead ends: 3421 [2021-11-13 02:35:40,015 INFO L226 Difference]: Without dead ends: 3301 [2021-11-13 02:35:40,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:35:40,016 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 182 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 991.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1152.92ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:40,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2 Invalid, 446 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [20 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 1152.92ms Time] [2021-11-13 02:35:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-11-13 02:35:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2009. [2021-11-13 02:35:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 4.0313745019920315) internal successors, (8095), 2008 states have internal predecessors, (8095), 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) [2021-11-13 02:35:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 8095 transitions. [2021-11-13 02:35:40,102 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 8095 transitions. Word has length 31 [2021-11-13 02:35:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:40,102 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 8095 transitions. [2021-11-13 02:35:40,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 8095 transitions. [2021-11-13 02:35:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 02:35:40,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:40,111 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] [2021-11-13 02:35:40,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:40,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:40,324 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1249089013, now seen corresponding path program 7 times [2021-11-13 02:35:40,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:40,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762123939] [2021-11-13 02:35:40,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:35:40,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:40,326 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:40,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 02:35:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:40,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:40,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:40,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:41,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:41,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762123939] [2021-11-13 02:35:41,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762123939] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:41,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:41,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:41,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497692662] [2021-11-13 02:35:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:41,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:41,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:41,006 INFO L87 Difference]: Start difference. First operand 2009 states and 8095 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:42,177 INFO L93 Difference]: Finished difference Result 2499 states and 9456 transitions. [2021-11-13 02:35:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:35:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2021-11-13 02:35:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:42,185 INFO L225 Difference]: With dead ends: 2499 [2021-11-13 02:35:42,185 INFO L226 Difference]: Without dead ends: 2222 [2021-11-13 02:35:42,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:35:42,187 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 868.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 976.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:42,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 13 Invalid, 342 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [4 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 976.18ms Time] [2021-11-13 02:35:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-11-13 02:35:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1334. [2021-11-13 02:35:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 4.061515378844711) internal successors, (5414), 1333 states have internal predecessors, (5414), 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) [2021-11-13 02:35:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 5414 transitions. [2021-11-13 02:35:42,234 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 5414 transitions. Word has length 31 [2021-11-13 02:35:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:42,234 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 5414 transitions. [2021-11-13 02:35:42,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-13 02:35:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 5414 transitions. [2021-11-13 02:35:42,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:42,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:42,240 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] [2021-11-13 02:35:42,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-13 02:35:42,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:42,455 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1980934829, now seen corresponding path program 1 times [2021-11-13 02:35:42,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:42,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822156403] [2021-11-13 02:35:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:42,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:42,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:42,457 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:42,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 02:35:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:42,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:35:42,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:35:43,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 02:35:43,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:43,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822156403] [2021-11-13 02:35:43,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822156403] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:43,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:43,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-11-13 02:35:43,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135289600] [2021-11-13 02:35:43,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:43,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:35:43,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:43,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:35:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:35:43,507 INFO L87 Difference]: Start difference. First operand 1334 states and 5414 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:44,330 INFO L93 Difference]: Finished difference Result 1828 states and 7420 transitions. [2021-11-13 02:35:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:35:44,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-11-13 02:35:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:44,336 INFO L225 Difference]: With dead ends: 1828 [2021-11-13 02:35:44,336 INFO L226 Difference]: Without dead ends: 1828 [2021-11-13 02:35:44,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:35:44,337 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 546.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 619.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:44,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 24 Invalid, 172 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 45 Unchecked, 619.64ms Time] [2021-11-13 02:35:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-13 02:35:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1384. [2021-11-13 02:35:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 4.063629790310919) internal successors, (5620), 1383 states have internal predecessors, (5620), 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) [2021-11-13 02:35:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5620 transitions. [2021-11-13 02:35:44,374 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5620 transitions. Word has length 33 [2021-11-13 02:35:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:44,374 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 5620 transitions. [2021-11-13 02:35:44,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5620 transitions. [2021-11-13 02:35:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:44,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:44,379 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] [2021-11-13 02:35:44,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:44,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:44,579 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:44,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash -972990709, now seen corresponding path program 1 times [2021-11-13 02:35:44,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:44,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131529777] [2021-11-13 02:35:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:44,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:44,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:44,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 02:35:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:44,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 02:35:44,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:45,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:45,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:45,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131529777] [2021-11-13 02:35:45,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131529777] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:45,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486527675] [2021-11-13 02:35:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:45,983 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:35:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:35:45,984 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:35:45,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-13 02:35:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 02:35:46,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:46,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:47,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [486527675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:47,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539315921] [2021-11-13 02:35:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:47,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:47,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:47,101 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:47,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-13 02:35:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:47,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:35:47,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:47,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 02:35:48,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539315921] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:48,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:35:48,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 8, 8] total 20 [2021-11-13 02:35:48,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009789790] [2021-11-13 02:35:48,464 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:35:48,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 02:35:48,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 02:35:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:35:48,466 INFO L87 Difference]: Start difference. First operand 1384 states and 5620 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 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) [2021-11-13 02:35:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:51,526 INFO L93 Difference]: Finished difference Result 3302 states and 13310 transitions. [2021-11-13 02:35:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:35:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 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 33 [2021-11-13 02:35:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:51,535 INFO L225 Difference]: With dead ends: 3302 [2021-11-13 02:35:51,535 INFO L226 Difference]: Without dead ends: 3302 [2021-11-13 02:35:51,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:35:51,536 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 340 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2449.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.64ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2770.41ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 43 Invalid, 997 Unknown, 0 Unchecked, 7.64ms Time], IncrementalHoareTripleChecker [69 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 2770.41ms Time] [2021-11-13 02:35:51,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2021-11-13 02:35:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 1458. [2021-11-13 02:35:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 4.023335621139327) internal successors, (5862), 1457 states have internal predecessors, (5862), 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) [2021-11-13 02:35:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5862 transitions. [2021-11-13 02:35:51,583 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5862 transitions. Word has length 33 [2021-11-13 02:35:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:51,583 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5862 transitions. [2021-11-13 02:35:51,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 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) [2021-11-13 02:35:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5862 transitions. [2021-11-13 02:35:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:51,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:51,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:51,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:51,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-11-13 02:35:52,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:52,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:52,189 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash 816546735, now seen corresponding path program 2 times [2021-11-13 02:35:52,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:52,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308117312] [2021-11-13 02:35:52,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:35:52,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:52,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:52,191 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:52,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 02:35:52,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:52,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:52,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:35:52,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:52,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:52,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:52,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308117312] [2021-11-13 02:35:52,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308117312] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:52,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:52,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-13 02:35:52,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506135107] [2021-11-13 02:35:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:52,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:35:52,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:35:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:35:52,862 INFO L87 Difference]: Start difference. First operand 1458 states and 5862 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:53,398 INFO L93 Difference]: Finished difference Result 2258 states and 9097 transitions. [2021-11-13 02:35:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:35:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-11-13 02:35:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:53,404 INFO L225 Difference]: With dead ends: 2258 [2021-11-13 02:35:53,405 INFO L226 Difference]: Without dead ends: 2258 [2021-11-13 02:35:53,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:35:53,405 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 416.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 482.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:53,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 12 Invalid, 224 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [7 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 482.59ms Time] [2021-11-13 02:35:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-11-13 02:35:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1586. [2021-11-13 02:35:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1585 states have (on average 4.109148264984227) internal successors, (6513), 1585 states have internal predecessors, (6513), 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) [2021-11-13 02:35:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 6513 transitions. [2021-11-13 02:35:53,448 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 6513 transitions. Word has length 33 [2021-11-13 02:35:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:53,448 INFO L470 AbstractCegarLoop]: Abstraction has 1586 states and 6513 transitions. [2021-11-13 02:35:53,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 6513 transitions. [2021-11-13 02:35:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:53,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:53,453 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] [2021-11-13 02:35:53,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:53,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:53,653 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1577171567, now seen corresponding path program 3 times [2021-11-13 02:35:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:53,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406718335] [2021-11-13 02:35:53,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:35:53,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:53,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:53,655 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:53,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-13 02:35:53,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:35:53,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:53,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:35:53,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:54,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:54,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:54,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406718335] [2021-11-13 02:35:54,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406718335] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:54,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:54,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-13 02:35:54,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095520716] [2021-11-13 02:35:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:54,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:54,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:54,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:35:54,564 INFO L87 Difference]: Start difference. First operand 1586 states and 6513 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-11-13 02:35:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:55,686 INFO L93 Difference]: Finished difference Result 2474 states and 9610 transitions. [2021-11-13 02:35:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:35:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2021-11-13 02:35:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:55,692 INFO L225 Difference]: With dead ends: 2474 [2021-11-13 02:35:55,692 INFO L226 Difference]: Without dead ends: 2474 [2021-11-13 02:35:55,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:35:55,693 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 93 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 844.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 979.69ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:55,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2 Invalid, 384 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 979.69ms Time] [2021-11-13 02:35:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2021-11-13 02:35:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1360. [2021-11-13 02:35:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 4.004415011037527) internal successors, (5442), 1359 states have internal predecessors, (5442), 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) [2021-11-13 02:35:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 5442 transitions. [2021-11-13 02:35:55,728 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 5442 transitions. Word has length 33 [2021-11-13 02:35:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:55,728 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 5442 transitions. [2021-11-13 02:35:55,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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) [2021-11-13 02:35:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 5442 transitions. [2021-11-13 02:35:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:55,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:55,733 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] [2021-11-13 02:35:55,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:55,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:55,946 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash 705701779, now seen corresponding path program 4 times [2021-11-13 02:35:55,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:55,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373551012] [2021-11-13 02:35:55,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 02:35:55,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:55,948 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:55,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-13 02:35:56,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 02:35:56,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:56,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:35:56,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:56,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:56,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373551012] [2021-11-13 02:35:56,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373551012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:56,535 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:56,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 02:35:56,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365136760] [2021-11-13 02:35:56,535 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:56,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:56,536 INFO L87 Difference]: Start difference. First operand 1360 states and 5442 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-13 02:35:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:57,663 INFO L93 Difference]: Finished difference Result 1924 states and 7450 transitions. [2021-11-13 02:35:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:35:57,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 33 [2021-11-13 02:35:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:57,671 INFO L225 Difference]: With dead ends: 1924 [2021-11-13 02:35:57,672 INFO L226 Difference]: Without dead ends: 1868 [2021-11-13 02:35:57,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:35:57,673 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 72 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 762.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 885.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:57,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 12 Invalid, 268 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [14 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 885.37ms Time] [2021-11-13 02:35:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-11-13 02:35:57,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1342. [2021-11-13 02:35:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.9686800894854586) internal successors, (5322), 1341 states have internal predecessors, (5322), 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) [2021-11-13 02:35:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5322 transitions. [2021-11-13 02:35:57,757 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5322 transitions. Word has length 33 [2021-11-13 02:35:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:57,758 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 5322 transitions. [2021-11-13 02:35:57,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-13 02:35:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5322 transitions. [2021-11-13 02:35:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:57,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:57,764 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] [2021-11-13 02:35:57,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:57,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:57,988 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash 112502149, now seen corresponding path program 5 times [2021-11-13 02:35:57,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:57,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044782983] [2021-11-13 02:35:57,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 02:35:57,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:57,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:57,990 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:57,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-13 02:35:58,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:35:58,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:58,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:35:58,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:58,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:58,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:58,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044782983] [2021-11-13 02:35:58,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044782983] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:58,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:58,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-13 02:35:58,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990864617] [2021-11-13 02:35:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:58,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:35:58,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:58,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:35:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:35:58,464 INFO L87 Difference]: Start difference. First operand 1342 states and 5322 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:59,014 INFO L93 Difference]: Finished difference Result 1930 states and 7246 transitions. [2021-11-13 02:35:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:35:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-11-13 02:35:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:59,019 INFO L225 Difference]: With dead ends: 1930 [2021-11-13 02:35:59,019 INFO L226 Difference]: Without dead ends: 1930 [2021-11-13 02:35:59,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:35:59,020 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 446.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 517.98ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:59,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 16 Invalid, 211 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 517.98ms Time] [2021-11-13 02:35:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-13 02:35:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1262. [2021-11-13 02:35:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.865186360031721) internal successors, (4874), 1261 states have internal predecessors, (4874), 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) [2021-11-13 02:35:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4874 transitions. [2021-11-13 02:35:59,051 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4874 transitions. Word has length 33 [2021-11-13 02:35:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:59,051 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4874 transitions. [2021-11-13 02:35:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:35:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4874 transitions. [2021-11-13 02:35:59,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:35:59,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:59,055 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] [2021-11-13 02:35:59,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:59,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:59,259 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:35:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -689414075, now seen corresponding path program 6 times [2021-11-13 02:35:59,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:59,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983866641] [2021-11-13 02:35:59,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 02:35:59,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:59,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:59,261 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:59,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-13 02:35:59,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-13 02:35:59,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:59,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:35:59,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:59,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:35:59,764 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:59,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983866641] [2021-11-13 02:35:59,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983866641] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:59,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:59,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 02:35:59,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412712495] [2021-11-13 02:35:59,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:59,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:35:59,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:35:59,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:59,766 INFO L87 Difference]: Start difference. First operand 1262 states and 4874 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:00,625 INFO L93 Difference]: Finished difference Result 1752 states and 6846 transitions. [2021-11-13 02:36:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:36:00,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-13 02:36:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:00,630 INFO L225 Difference]: With dead ends: 1752 [2021-11-13 02:36:00,630 INFO L226 Difference]: Without dead ends: 1696 [2021-11-13 02:36:00,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:36:00,632 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 120 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 596.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 695.92ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:00,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 15 Invalid, 279 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [27 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 695.92ms Time] [2021-11-13 02:36:00,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2021-11-13 02:36:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1196. [2021-11-13 02:36:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 3.8476987447698745) internal successors, (4598), 1195 states have internal predecessors, (4598), 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) [2021-11-13 02:36:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 4598 transitions. [2021-11-13 02:36:00,670 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 4598 transitions. Word has length 33 [2021-11-13 02:36:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 4598 transitions. [2021-11-13 02:36:00,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:36:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 4598 transitions. [2021-11-13 02:36:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 02:36:00,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:00,673 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] [2021-11-13 02:36:00,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:00,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:00,874 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:36:00,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash -11275449, now seen corresponding path program 7 times [2021-11-13 02:36:00,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:00,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123766908] [2021-11-13 02:36:00,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 02:36:00,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:00,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:00,876 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:00,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-13 02:36:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:01,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:36:01,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:36:01,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:36:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:36:01,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:36:01,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123766908] [2021-11-13 02:36:01,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123766908] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:36:01,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:36:01,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-13 02:36:01,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376013349] [2021-11-13 02:36:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:36:01,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:36:01,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:36:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:36:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:36:01,288 INFO L87 Difference]: Start difference. First operand 1196 states and 4598 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:36:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:36:01,838 INFO L93 Difference]: Finished difference Result 1240 states and 4726 transitions. [2021-11-13 02:36:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:36:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2021-11-13 02:36:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:36:01,842 INFO L225 Difference]: With dead ends: 1240 [2021-11-13 02:36:01,842 INFO L226 Difference]: Without dead ends: 1128 [2021-11-13 02:36:01,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:36:01,843 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 55 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 438.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 513.47ms IncrementalHoareTripleChecker+Time [2021-11-13 02:36:01,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 13 Invalid, 214 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 513.47ms Time] [2021-11-13 02:36:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-13 02:36:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 964. [2021-11-13 02:36:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 3.877466251298027) internal successors, (3734), 963 states have internal predecessors, (3734), 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) [2021-11-13 02:36:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 3734 transitions. [2021-11-13 02:36:01,866 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 3734 transitions. Word has length 33 [2021-11-13 02:36:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:36:01,866 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 3734 transitions. [2021-11-13 02:36:01,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-13 02:36:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 3734 transitions. [2021-11-13 02:36:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 02:36:01,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:36:01,869 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] [2021-11-13 02:36:01,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-13 02:36:02,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:36:02,070 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-13 02:36:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:36:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2129500691, now seen corresponding path program 1 times [2021-11-13 02:36:02,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:36:02,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128252226] [2021-11-13 02:36:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:36:02,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:36:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:36:02,072 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:36:02,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-13 02:36:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:36:02,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-13 02:36:02,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:36:04,166 INFO L354 Elim1Store]: treesize reduction 1262, result has 5.7 percent of original size [2021-11-13 02:36:04,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 85 treesize of output 105 [2021-11-13 02:39:03,888 WARN L227 SmtUtils]: Spent 2.91m on a formula simplification. DAG size of input: 375 DAG size of output: 127 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 02:39:03,891 INFO L354 Elim1Store]: treesize reduction 2057, result has 17.4 percent of original size [2021-11-13 02:39:03,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 123 treesize of output 478 [2021-11-13 02:45:17,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-13 02:45:17,830 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-13 02:45:17,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:45:17,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128252226] [2021-11-13 02:45:17,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-13 02:45:17,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081447975] [2021-11-13 02:45:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:17,831 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:45:17,832 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:45:17,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2021-11-13 02:45:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:18,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-13 02:45:18,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:18,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 02:45:18,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985212862] [2021-11-13 02:45:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:18,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:18,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:18,592 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:18,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-13 02:45:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:18,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-13 02:45:18,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:18,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 02:45:18,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:45:18,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-13 02:45:18,895 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-13 02:45:18,895 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-13 02:45:18,900 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-13 02:45:18,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-11-13 02:45:18,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-11-13 02:45:18,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-11-13 02:45:18,901 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-11-13 02:45:18,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:19,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-13 02:45:19,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-11-13 02:45:19,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_651316e6-043e-442d-b78f-8fb4abc8d68d/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:19,505 INFO L732 BasicCegarLoop]: Path program histogram: [10, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:19,507 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 02:45:19,508 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:45:19,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:45:19 BasicIcfg [2021-11-13 02:45:19,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:45:19,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:45:19,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:45:19,535 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:45:19,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:07" (3/4) ... [2021-11-13 02:45:19,538 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:45:19,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:45:19,539 INFO L158 Benchmark]: Toolchain (without parser) took 673974.70ms. Allocated memory was 54.5MB in the beginning and 343.9MB in the end (delta: 289.4MB). Free memory was 32.5MB in the beginning and 98.9MB in the end (delta: -66.4MB). Peak memory consumption was 223.1MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,539 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:45:19,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.19ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 32.3MB in the beginning and 55.8MB in the end (delta: -23.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.19ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 53.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,540 INFO L158 Benchmark]: Boogie Preprocessor took 58.45ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,540 INFO L158 Benchmark]: RCFGBuilder took 1344.39ms. Allocated memory is still 77.6MB. Free memory was 50.8MB in the beginning and 56.7MB in the end (delta: -5.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,541 INFO L158 Benchmark]: TraceAbstraction took 671846.85ms. Allocated memory was 77.6MB in the beginning and 343.9MB in the end (delta: 266.3MB). Free memory was 56.2MB in the beginning and 100.0MB in the end (delta: -43.8MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. [2021-11-13 02:45:19,541 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 343.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:45:19,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.19ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 32.3MB in the beginning and 55.8MB in the end (delta: -23.5MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.19ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 53.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.45ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 50.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1344.39ms. Allocated memory is still 77.6MB. Free memory was 50.8MB in the beginning and 56.7MB in the end (delta: -5.9MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * TraceAbstraction took 671846.85ms. Allocated memory was 77.6MB in the beginning and 343.9MB in the end (delta: 266.3MB). Free memory was 56.2MB in the beginning and 100.0MB in the end (delta: -43.8MB). Peak memory consumption was 221.8MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 343.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.4s, 216 PlacesBefore, 47 PlacesAfterwards, 221 TransitionsBefore, 40 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 8 FixpointIterations, 147 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 210 TotalNumberOfCompositions, 3117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2785, positive: 2703, positive conditional: 0, positive unconditional: 2703, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1200, positive: 1180, positive conditional: 0, positive unconditional: 1180, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1200, positive: 1178, positive conditional: 0, positive unconditional: 1178, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1606, positive: 280, positive conditional: 0, positive unconditional: 280, negative: 1327, negative conditional: 0, negative unconditional: 1327, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2785, positive: 1523, positive conditional: 0, positive unconditional: 1523, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 1200, unknown conditional: 0, unknown unconditional: 1200] , Statistics on independence cache: Total cache size (in pairs): 182, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 148]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L122] 0 pthread_t t1, t2, t3, t4; [L124] 0 C = __VERIFIER_nondet_int() [L125] 0 N = __VERIFIER_nondet_int() [L126] 0 n1 = __VERIFIER_nondet_int() [L127] 0 n2 = __VERIFIER_nondet_int() [L128] 0 q1_front = __VERIFIER_nondet_int() [L129] 0 q1_back = q1_front [L130] 0 q2_front = __VERIFIER_nondet_int() [L131] 0 q2_back = q2_front [L132] CALL, EXPR 0 create_fresh_int_array(n1) [L154] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L154] RET 0 assume_abort_if_not(size >= 0) [L155] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L155] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L157] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L158] 0 int i = 0; [L158] COND TRUE 0 i < size [L159] 0 arr[i] = __VERIFIER_nondet_int() [L158] 0 i++ [L161] 0 return arr; [L132] RET, EXPR 0 create_fresh_int_array(n1) [L132] 0 q1 = create_fresh_int_array(n1) [L133] CALL, EXPR 0 create_fresh_int_array(n2) [L154] CALL 0 assume_abort_if_not(size >= 0) [L38] COND TRUE 0 !cond [L154] RET 0 assume_abort_if_not(size >= 0) [L155] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L155] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L157] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L158] 0 int i = 0; [L158] COND TRUE 0 i < size [L159] 0 arr[i] = __VERIFIER_nondet_int() [L158] 0 i++ [L158] COND FALSE 0 !(i < size) [L161] 0 return arr; [L133] RET, EXPR 0 create_fresh_int_array(n2) [L133] 0 q2 = create_fresh_int_array(n2) [L135] CALL 0 assume_abort_if_not(C > -2147483648 && N >= 0) [L38] COND FALSE 0 !(!cond) [L135] RET 0 assume_abort_if_not(C > -2147483648 && N >= 0) [L138] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) [L49] 1 _Bool cond = i < N; [L139] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) [L68] 2 _Bool cond = j < N; [L70] COND TRUE 2 \read(cond) [L72] CALL 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L38] COND TRUE 2 !cond [L72] RET 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L73] EXPR 2 q2[q2_back] [L73] CALL 2 assume_abort_if_not(q2[q2_back] == -C) [L38] COND TRUE 2 !cond [L73] RET 2 assume_abort_if_not(q2[q2_back] == -C) [L74] 2 q2_back++ [L75] 2 j++ [L78] 2 cond = j < N [L70] COND FALSE 2 !(\read(cond)) [L82] 2 return 0; [L140] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) [L87] 3 _Bool cond = i < N || q1_front < q1_back; [L141] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) [L142] 0 \read(t1) [L105] 4 _Bool cond = j < N || q2_front < q2_back; [L107] COND TRUE 4 \read(cond) [L109] CALL 4 assume_abort_if_not(q2_front < q2_back && q2_front >= 0 && q2_front < n2) [L38] COND TRUE 4 !cond [L109] RET 4 assume_abort_if_not(q2_front < q2_back && q2_front >= 0 && q2_front < n2) [L110] EXPR 4 q2[q2_front] [L110] CALL, EXPR 4 plus(total, q2[q2_front]) [L165] CALL 4 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L38] COND FALSE 4 !(!cond) [L165] RET 4 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L166] CALL 4 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 4 !(!cond) [L166] RET 4 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L167] 4 return a + b; [L110] RET, EXPR 4 plus(total, q2[q2_front]) [L110] 4 total = plus(total, q2[q2_front]) [L111] 4 q2_front++ [L114] 4 cond = j < N || q2_front < q2_back [L107] COND FALSE 4 !(\read(cond)) [L118] 4 return 0; [L51] COND TRUE 1 \read(cond) [L53] CALL 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L38] COND TRUE 1 !cond [L53] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L54] EXPR 1 q1[q1_back] [L54] CALL 1 assume_abort_if_not(q1[q1_back] == C) [L38] COND FALSE 1 !(!cond) [L54] RET 1 assume_abort_if_not(q1[q1_back] == C) [L55] 1 q1_back++ [L56] 1 i++ [L59] 1 cond = i < N [L63] 1 return 0; [L142] FCALL, JOIN 1 pthread_join(t1, 0) [L143] 0 \read(t2) [L89] COND TRUE 3 \read(cond) [L91] CALL 3 assume_abort_if_not(q1_front < q1_back && q1_front >= 0 && q1_front < n1) [L38] COND FALSE 3 !(!cond) [L91] RET 3 assume_abort_if_not(q1_front < q1_back && q1_front >= 0 && q1_front < n1) [L92] EXPR 3 q1[q1_front] [L92] CALL, EXPR 3 plus(total, q1[q1_front]) [L165] CALL 3 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L38] COND FALSE 3 !(!cond) [L165] RET 3 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L166] CALL 3 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 3 !(!cond) [L166] RET 3 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L167] 3 return a + b; [L92] RET, EXPR 3 plus(total, q1[q1_front]) [L92] 3 total = plus(total, q1[q1_front]) [L93] 3 q1_front++ [L96] 3 cond = i < N || q1_front < q1_back [L100] 3 return 0; [L143] FCALL, JOIN 2 pthread_join(t2, 0) [L144] 0 \read(t3) [L144] FCALL, JOIN 3 pthread_join(t3, 0) [L145] 0 \read(t4) [L145] FCALL, JOIN 4 pthread_join(t4, 0) [L147] CALL 0 assume_abort_if_not(total != 0) [L38] COND FALSE 0 !(!cond) [L147] RET 0 assume_abort_if_not(total != 0) [L148] 0 reach_error() - UnprovableResult [Line: 139]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 140]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 141]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 138]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 236 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 671.6s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.2s, AutomataDifference: 41.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 32.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4757 SdHoareTripleChecker+Valid, 31747.97ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4757 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 27450.15ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 45 IncrementalHoareTripleChecker+Unchecked, 6339 mSDsCounter, 456 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11937 IncrementalHoareTripleChecker+Invalid, 12438 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 456 mSolverCounterUnsat, 135 mSDtfsCounter, 11937 mSolverCounterSat, 111.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2265 GetRequests, 1811 SyntacticMatches, 1 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 13.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2353occurred in iteration=18, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 30 MinimizatonAttempts, 26522 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 577.8s InterpolantComputationTime, 1099 NumberOfCodeBlocks, 1098 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2060 ConstructedInterpolants, 10 QuantifiedInterpolants, 12911 SizeOfPredicates, 318 NumberOfNonLiveVariables, 5534 ConjunctsInSsa, 332 ConjunctsInUnsatCore, 68 InterpolantComputations, 44 PerfectInterpolantSequences, 197/226 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN