./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8 --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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:49,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:49,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:49,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:49,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:49,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:49,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:49,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:49,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:49,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:49,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:49,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:49,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:49,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:49,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:49,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:49,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:49,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:49,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:49,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:49,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:49,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:49,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:49,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:49,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:49,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:49,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:49,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:49,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:49,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:49,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:49,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:49,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:49,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:49,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:49,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:49,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:49,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:49,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:49,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:49,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:49,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:36:49,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:49,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:49,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:49,319 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:49,320 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:49,320 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:49,320 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:36:49,320 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:49,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:49,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:36:49,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:36:49,328 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:49,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:36:49,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:36:49,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:36:49,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:49,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:49,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:36:49,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:49,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:49,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:49,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:49,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:49,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:49,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:49,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:49,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:49,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:49,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:49,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:49,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:49,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:49,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:49,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:49,336 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:36:49,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:36:49,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:49,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:49,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:49,337 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_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2021-11-07 01:36:49,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:49,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:49,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:49,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:49,634 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:49,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-07 01:36:49,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/a08e66963/cf89c99d12924715aefa5b49a9dceb82/FLAGc4b936d4f [2021-11-07 01:36:50,353 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:50,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-07 01:36:50,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/a08e66963/cf89c99d12924715aefa5b49a9dceb82/FLAGc4b936d4f [2021-11-07 01:36:50,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/a08e66963/cf89c99d12924715aefa5b49a9dceb82 [2021-11-07 01:36:50,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:50,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:50,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:50,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:50,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:50,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:50" (1/1) ... [2021-11-07 01:36:50,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f37414e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:50, skipping insertion in model container [2021-11-07 01:36:50,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:50" (1/1) ... [2021-11-07 01:36:50,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:50,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:51,083 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_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-07 01:36:51,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:51,386 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) [2021-11-07 01:36:51,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@692c45d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:51, skipping insertion in model container [2021-11-07 01:36:51,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:51,387 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:36:51,389 INFO L168 Benchmark]: Toolchain (without parser) took 848.50 ms. Allocated memory is still 100.7 MB. Free memory was 65.4 MB in the beginning and 57.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:51,390 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:36:51,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.56 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 57.4 MB in the end (delta: 7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:36:51,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 844.56 ms. Allocated memory is still 100.7 MB. Free memory was 65.2 MB in the beginning and 57.4 MB in the end (delta: 7.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8 --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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:36:53,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:36:53,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:36:53,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:36:53,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:36:53,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:36:53,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:36:53,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:36:53,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:36:53,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:36:53,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:36:53,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:36:53,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:36:53,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:36:53,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:36:53,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:36:53,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:36:53,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:36:53,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:36:53,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:36:53,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:36:53,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:36:53,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:36:53,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:36:53,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:36:53,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:36:53,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:36:53,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:36:53,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:36:53,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:36:53,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:36:53,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:36:53,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:36:53,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:36:53,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:36:53,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:36:53,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:36:53,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:36:53,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:36:53,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:36:53,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:36:53,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:36:53,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:36:53,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:36:53,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:36:53,692 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:36:53,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:36:53,693 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:36:53,693 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:36:53,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:36:53,694 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:36:53,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:36:53,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:36:53,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:36:53,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:36:53,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:36:53,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:36:53,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:36:53,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:36:53,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:36:53,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:36:53,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:36:53,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:36:53,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:36:53,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:36:53,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:36:53,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:36:53,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:36:53,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:53,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:36:53,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:36:53,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:36:53,700 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:36:53,701 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:53,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:36:53,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:36:53,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:36:53,715 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_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2021-11-07 01:36:54,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:36:54,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:36:54,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:36:54,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:36:54,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:36:54,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-07 01:36:54,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/afd21a25b/6b0d1d49a9a245088e17a8051aa004e4/FLAGf5046adc2 [2021-11-07 01:36:54,781 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:36:54,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2021-11-07 01:36:54,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/afd21a25b/6b0d1d49a9a245088e17a8051aa004e4/FLAGf5046adc2 [2021-11-07 01:36:55,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/data/afd21a25b/6b0d1d49a9a245088e17a8051aa004e4 [2021-11-07 01:36:55,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:36:55,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:36:55,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:55,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:36:55,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:36:55,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2008fab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:55, skipping insertion in model container [2021-11-07 01:36:55,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:36:55" (1/1) ... [2021-11-07 01:36:55,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:36:55,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:55,647 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_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-07 01:36:55,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:55,901 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:36:55,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:36:55,958 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_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-07 01:36:56,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:56,078 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:36:56,103 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_577a69c9-009a-438a-8fb2-33bcfc25040c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2021-11-07 01:36:56,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:36:56,270 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:36:56,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56 WrapperNode [2021-11-07 01:36:56,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:36:56,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:56,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:36:56,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:36:56,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:36:56,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:36:56,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:36:56,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:36:56,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:36:56,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:36:56,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:36:56,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:36:56,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (1/1) ... [2021-11-07 01:36:56,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:36:56,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:56,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:36:56,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:36:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:36:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:36:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:36:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:36:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:36:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:36:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:36:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:36:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:36:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:36:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:36:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:37:09,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:37:09,434 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2021-11-07 01:37:09,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:09 BoogieIcfgContainer [2021-11-07 01:37:09,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:37:09,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:37:09,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:37:09,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:37:09,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:36:55" (1/3) ... [2021-11-07 01:37:09,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42586507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:09, skipping insertion in model container [2021-11-07 01:37:09,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:36:56" (2/3) ... [2021-11-07 01:37:09,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42586507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:37:09, skipping insertion in model container [2021-11-07 01:37:09,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:37:09" (3/3) ... [2021-11-07 01:37:09,445 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2021-11-07 01:37:09,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:37:09,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 01:37:09,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:37:09,525 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 [2021-11-07 01:37:09,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 01:37:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 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) [2021-11-07 01:37:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:37:09,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:09,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:09,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-07 01:37:09,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:09,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193309479] [2021-11-07 01:37:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:09,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:09,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:09,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:37:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:09,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:37:09,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:09,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:09,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:09,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193309479] [2021-11-07 01:37:09,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193309479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:09,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:09,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:37:09,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521130965] [2021-11-07 01:37:09,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:37:09,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:09,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:37:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:37:09,982 INFO L87 Difference]: Start difference. First operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:10,067 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2021-11-07 01:37:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:37:10,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:37:10,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:10,085 INFO L225 Difference]: With dead ends: 938 [2021-11-07 01:37:10,086 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 01:37:10,091 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:37:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 01:37:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-07 01:37:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 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) [2021-11-07 01:37:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-07 01:37:10,225 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-07 01:37:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:10,226 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-07 01:37:10,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-07 01:37:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:10,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:10,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:10,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:10,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-07 01:37:10,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:10,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970995419] [2021-11-07 01:37:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:10,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:10,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:10,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:37:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:10,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:10,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:11,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:11,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970995419] [2021-11-07 01:37:11,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970995419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:11,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:11,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:11,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213438220] [2021-11-07 01:37:11,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:11,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:11,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:11,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:11,109 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:11,309 INFO L93 Difference]: Finished difference Result 756 states and 989 transitions. [2021-11-07 01:37:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:37:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:11,315 INFO L225 Difference]: With dead ends: 756 [2021-11-07 01:37:11,315 INFO L226 Difference]: Without dead ends: 469 [2021-11-07 01:37:11,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-07 01:37:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 468. [2021-11-07 01:37:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.334070796460177) internal successors, (603), 467 states have internal predecessors, (603), 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) [2021-11-07 01:37:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2021-11-07 01:37:11,378 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 44 [2021-11-07 01:37:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:11,378 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2021-11-07 01:37:11,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2021-11-07 01:37:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:11,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:11,381 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:11,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:11,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:11,599 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1615141200, now seen corresponding path program 1 times [2021-11-07 01:37:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:11,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247997987] [2021-11-07 01:37:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:11,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:11,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:11,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:37:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:11,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:11,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:12,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:12,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:12,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247997987] [2021-11-07 01:37:12,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247997987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:12,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:12,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:37:12,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821374801] [2021-11-07 01:37:12,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:37:12,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:12,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:37:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:12,383 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-07 01:37:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:12,552 INFO L93 Difference]: Finished difference Result 729 states and 939 transitions. [2021-11-07 01:37:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:12,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:37:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:12,556 INFO L225 Difference]: With dead ends: 729 [2021-11-07 01:37:12,556 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 01:37:12,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 01:37:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-11-07 01:37:12,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 446 states have (on average 1.3295964125560538) internal successors, (593), 461 states have internal predecessors, (593), 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) [2021-11-07 01:37:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 593 transitions. [2021-11-07 01:37:12,573 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 593 transitions. Word has length 44 [2021-11-07 01:37:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:12,574 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 593 transitions. [2021-11-07 01:37:12,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-07 01:37:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 593 transitions. [2021-11-07 01:37:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:37:12,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:12,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:12,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:12,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:12,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1883778186, now seen corresponding path program 1 times [2021-11-07 01:37:12,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:12,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044281041] [2021-11-07 01:37:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:12,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:12,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:12,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:37:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:13,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:13,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:13,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:13,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:13,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:13,342 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:37:13,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:37:13,426 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:37:13,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 01:37:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:13,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:13,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:13,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044281041] [2021-11-07 01:37:13,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044281041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:13,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:13,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:37:13,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815197098] [2021-11-07 01:37:13,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:37:13,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:37:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:13,771 INFO L87 Difference]: Start difference. First operand 462 states and 593 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:26,581 INFO L93 Difference]: Finished difference Result 825 states and 1057 transitions. [2021-11-07 01:37:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:37:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:37:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:26,586 INFO L225 Difference]: With dead ends: 825 [2021-11-07 01:37:26,586 INFO L226 Difference]: Without dead ends: 537 [2021-11-07 01:37:26,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:37:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-07 01:37:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 464. [2021-11-07 01:37:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 448 states have (on average 1.328125) internal successors, (595), 463 states have internal predecessors, (595), 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) [2021-11-07 01:37:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 595 transitions. [2021-11-07 01:37:26,605 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 595 transitions. Word has length 44 [2021-11-07 01:37:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:26,605 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 595 transitions. [2021-11-07 01:37:26,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:37:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 595 transitions. [2021-11-07 01:37:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:37:26,609 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:26,609 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:26,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:26,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1640597416, now seen corresponding path program 1 times [2021-11-07 01:37:26,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:26,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923110673] [2021-11-07 01:37:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:26,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:26,833 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:26,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:37:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:27,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:27,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:27,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:27,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:27,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923110673] [2021-11-07 01:37:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923110673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:27,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:27,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:37:27,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083547641] [2021-11-07 01:37:27,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:37:27,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:27,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:37:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:37:27,857 INFO L87 Difference]: Start difference. First operand 464 states and 595 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-07 01:37:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:28,015 INFO L93 Difference]: Finished difference Result 1017 states and 1310 transitions. [2021-11-07 01:37:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 97 [2021-11-07 01:37:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:28,025 INFO L225 Difference]: With dead ends: 1017 [2021-11-07 01:37:28,025 INFO L226 Difference]: Without dead ends: 557 [2021-11-07 01:37:28,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:37:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-11-07 01:37:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 467. [2021-11-07 01:37:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.3082039911308203) internal successors, (590), 466 states have internal predecessors, (590), 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) [2021-11-07 01:37:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 590 transitions. [2021-11-07 01:37:28,048 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 590 transitions. Word has length 97 [2021-11-07 01:37:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:28,050 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 590 transitions. [2021-11-07 01:37:28,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2021-11-07 01:37:28,051 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 590 transitions. [2021-11-07 01:37:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:37:28,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:28,054 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:28,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:28,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:28,271 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:28,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash -35071002, now seen corresponding path program 1 times [2021-11-07 01:37:28,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:28,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685453558] [2021-11-07 01:37:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:28,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:28,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:28,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:37:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:28,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:29,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:29,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:29,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685453558] [2021-11-07 01:37:29,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685453558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:29,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:29,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-07 01:37:29,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518663579] [2021-11-07 01:37:29,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:37:29,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:37:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:37:29,725 INFO L87 Difference]: Start difference. First operand 467 states and 590 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-11-07 01:37:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:29,888 INFO L93 Difference]: Finished difference Result 1013 states and 1287 transitions. [2021-11-07 01:37:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 97 [2021-11-07 01:37:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:29,893 INFO L225 Difference]: With dead ends: 1013 [2021-11-07 01:37:29,893 INFO L226 Difference]: Without dead ends: 550 [2021-11-07 01:37:29,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:37:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-07 01:37:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 461. [2021-11-07 01:37:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 445 states have (on average 1.303370786516854) internal successors, (580), 460 states have internal predecessors, (580), 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) [2021-11-07 01:37:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 580 transitions. [2021-11-07 01:37:29,912 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 580 transitions. Word has length 97 [2021-11-07 01:37:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:29,912 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 580 transitions. [2021-11-07 01:37:29,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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) [2021-11-07 01:37:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 580 transitions. [2021-11-07 01:37:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:37:29,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:29,914 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:29,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:30,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:30,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:30,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-07 01:37:30,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:30,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358476672] [2021-11-07 01:37:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:30,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:30,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:30,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:37:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:30,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:31,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:31,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:31,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358476672] [2021-11-07 01:37:31,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358476672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:31,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:31,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:37:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726043771] [2021-11-07 01:37:31,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:37:31,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:37:31,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:31,708 INFO L87 Difference]: Start difference. First operand 461 states and 580 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-07 01:37:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:32,069 INFO L93 Difference]: Finished difference Result 1186 states and 1492 transitions. [2021-11-07 01:37:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:37:32,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-07 01:37:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:32,075 INFO L225 Difference]: With dead ends: 1186 [2021-11-07 01:37:32,075 INFO L226 Difference]: Without dead ends: 729 [2021-11-07 01:37:32,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:37:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-11-07 01:37:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 694. [2021-11-07 01:37:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 678 states have (on average 1.3097345132743363) internal successors, (888), 693 states have internal predecessors, (888), 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) [2021-11-07 01:37:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 888 transitions. [2021-11-07 01:37:32,102 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 888 transitions. Word has length 97 [2021-11-07 01:37:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:32,103 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 888 transitions. [2021-11-07 01:37:32,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-07 01:37:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 888 transitions. [2021-11-07 01:37:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:37:32,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:32,106 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:32,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:32,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:32,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:32,319 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-07 01:37:32,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:32,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223558030] [2021-11-07 01:37:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:32,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:32,322 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:32,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:37:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:33,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:37:33,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:33,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:37:33,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:33,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223558030] [2021-11-07 01:37:33,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223558030] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:37:33,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:37:33,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:37:33,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75843236] [2021-11-07 01:37:33,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:37:33,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:37:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:33,519 INFO L87 Difference]: Start difference. First operand 694 states and 888 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-07 01:37:33,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:33,697 INFO L93 Difference]: Finished difference Result 1349 states and 1731 transitions. [2021-11-07 01:37:33,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:37:33,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 104 [2021-11-07 01:37:33,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:33,703 INFO L225 Difference]: With dead ends: 1349 [2021-11-07 01:37:33,704 INFO L226 Difference]: Without dead ends: 703 [2021-11-07 01:37:33,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:37:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-11-07 01:37:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2021-11-07 01:37:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 687 states have (on average 1.3056768558951966) internal successors, (897), 702 states have internal predecessors, (897), 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) [2021-11-07 01:37:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 897 transitions. [2021-11-07 01:37:33,734 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 897 transitions. Word has length 104 [2021-11-07 01:37:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:33,735 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 897 transitions. [2021-11-07 01:37:33,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-11-07 01:37:33,736 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 897 transitions. [2021-11-07 01:37:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:37:33,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:33,738 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:33,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:33,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 421191101, now seen corresponding path program 1 times [2021-11-07 01:37:33,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:33,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777362888] [2021-11-07 01:37:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:33,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:33,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:33,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:34,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:37:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:34,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:37:34,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:37:35,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:35,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777362888] [2021-11-07 01:37:35,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777362888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:35,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058124696] [2021-11-07 01:37:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:35,276 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:35,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:35,278 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:37:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:36,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:37:36,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:37:36,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:37:36,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1058124696] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:36,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416007232] [2021-11-07 01:37:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:37:36,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:37:36,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:36,718 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:37:36,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:37:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:37:37,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:37:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:37:37,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:37:38,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416007232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:38,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:37:38,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:37:38,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542652650] [2021-11-07 01:37:38,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:37:38,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:37:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:37:38,017 INFO L87 Difference]: Start difference. First operand 703 states and 897 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2021-11-07 01:37:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:38,739 INFO L93 Difference]: Finished difference Result 1380 states and 1777 transitions. [2021-11-07 01:37:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:37:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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 107 [2021-11-07 01:37:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:38,745 INFO L225 Difference]: With dead ends: 1380 [2021-11-07 01:37:38,745 INFO L226 Difference]: Without dead ends: 727 [2021-11-07 01:37:38,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:37:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-07 01:37:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-07 01:37:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.2953586497890295) internal successors, (921), 726 states have internal predecessors, (921), 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) [2021-11-07 01:37:38,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 921 transitions. [2021-11-07 01:37:38,772 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 921 transitions. Word has length 107 [2021-11-07 01:37:38,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:38,772 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 921 transitions. [2021-11-07 01:37:38,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2021-11-07 01:37:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 921 transitions. [2021-11-07 01:37:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 01:37:38,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:38,776 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:38,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:39,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:39,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:39,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:39,399 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:39,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash -872018179, now seen corresponding path program 2 times [2021-11-07 01:37:39,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:39,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487811504] [2021-11-07 01:37:39,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:39,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:39,402 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:39,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:37:40,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:40,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:40,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:40,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:40,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:41,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:41,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487811504] [2021-11-07 01:37:41,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487811504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:41,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [554932764] [2021-11-07 01:37:41,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:41,422 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:41,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:41,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:41,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:37:42,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:42,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:42,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:42,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:42,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:37:43,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [554932764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:43,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261955350] [2021-11-07 01:37:43,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:43,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:37:43,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:43,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:37:43,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:37:44,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:44,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:44,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:44,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:37:44,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:37:45,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261955350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:45,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:37:45,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:37:45,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87182165] [2021-11-07 01:37:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:37:45,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:37:45,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:37:45,619 INFO L87 Difference]: Start difference. First operand 727 states and 921 transitions. Second operand has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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) [2021-11-07 01:37:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:53,862 INFO L93 Difference]: Finished difference Result 2128 states and 2738 transitions. [2021-11-07 01:37:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:37:53,865 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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 115 [2021-11-07 01:37:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:53,873 INFO L225 Difference]: With dead ends: 2128 [2021-11-07 01:37:53,874 INFO L226 Difference]: Without dead ends: 1455 [2021-11-07 01:37:53,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:37:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-07 01:37:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 793. [2021-11-07 01:37:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.274131274131274) internal successors, (990), 792 states have internal predecessors, (990), 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) [2021-11-07 01:37:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 990 transitions. [2021-11-07 01:37:53,924 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 990 transitions. Word has length 115 [2021-11-07 01:37:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:53,924 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 990 transitions. [2021-11-07 01:37:53,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.074074074074074) internal successors, (137), 27 states have internal predecessors, (137), 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) [2021-11-07 01:37:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 990 transitions. [2021-11-07 01:37:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:37:53,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:53,927 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:37:53,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:54,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:54,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:37:54,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:37:54,534 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:37:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -837922435, now seen corresponding path program 3 times [2021-11-07 01:37:54,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:54,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063166846] [2021-11-07 01:37:54,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:37:54,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:54,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:54,536 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:54,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_577a69c9-009a-438a-8fb2-33bcfc25040c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:37:56,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:37:56,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:56,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:37:56,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:56,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 01:37:56,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:56,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:56,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:37:56,409 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:37:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 01:37:56,592 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 01:37:56,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15