./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.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_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/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_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/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_b26cc691-8343-4039-84a4-e56a0105c2a3/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:25,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:25,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:25,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:25,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:25,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:25,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:25,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:25,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:25,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:25,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:25,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:25,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:25,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:25,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:25,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:25,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:25,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:25,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:25,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:25,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:25,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:25,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:25,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:25,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:25,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:25,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:25,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:25,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:25,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:25,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:25,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:25,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:25,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:25,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:25,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:25,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:25,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:25,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:25,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:25,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:25,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:09:25,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:25,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:25,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:25,332 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:25,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:25,333 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:25,333 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:09:25,333 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:25,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:25,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:09:25,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:09:25,344 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:25,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:09:25,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:09:25,345 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:09:25,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:25,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:09:25,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:09:25,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:09:25,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:25,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:25,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:25,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:25,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:25,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:09:25,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:25,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:25,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:25,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:25,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:25,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:25,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:25,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:25,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:25,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:09:25,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:09:25,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:25,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:25,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:25,356 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_b26cc691-8343-4039-84a4-e56a0105c2a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2021-11-07 01:09:25,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:25,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:25,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:25,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:25,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:25,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-07 01:09:25,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/860e81015/63cbff46c0264ff7a8d63e9d4e593c57/FLAG4e174c91c [2021-11-07 01:09:26,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:26,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-07 01:09:26,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/860e81015/63cbff46c0264ff7a8d63e9d4e593c57/FLAG4e174c91c [2021-11-07 01:09:26,758 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/860e81015/63cbff46c0264ff7a8d63e9d4e593c57 [2021-11-07 01:09:26,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:26,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:26,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:26,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:26,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:26,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:26" (1/1) ... [2021-11-07 01:09:26,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e08302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:26, skipping insertion in model container [2021-11-07 01:09:26,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:26" (1/1) ... [2021-11-07 01:09:26,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:26,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:27,623 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-07 01:09:27,636 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-07 01:09:27,796 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-07 01:09:27,798 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-07 01:09:27,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:27,835 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 01:09:27,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b56b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:27, skipping insertion in model container [2021-11-07 01:09:27,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:27,836 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:09:27,839 INFO L168 Benchmark]: Toolchain (without parser) took 1072.88 ms. Allocated memory is still 96.5 MB. Free memory was 61.7 MB in the beginning and 59.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:27,840 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 50.4 MB in the beginning and 50.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:27,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1065.69 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 59.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:27,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory was 50.4 MB in the beginning and 50.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1065.69 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 59.9 MB in the end (delta: 1.7 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: 990]: 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_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/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_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/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_b26cc691-8343-4039-84a4-e56a0105c2a3/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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:09:30,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:09:30,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:09:30,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:09:30,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:09:30,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:09:30,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:09:30,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:09:30,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:09:30,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:09:30,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:09:30,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:09:30,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:09:30,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:09:30,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:09:30,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:09:30,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:09:30,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:09:30,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:09:30,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:09:30,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:09:30,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:09:30,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:09:30,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:09:30,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:09:30,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:09:30,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:09:30,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:09:30,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:09:30,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:09:30,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:09:30,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:09:30,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:09:30,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:09:30,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:09:30,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:09:30,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:09:30,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:09:30,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:09:30,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:09:30,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:09:30,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:09:30,817 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:09:30,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:09:30,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:09:30,819 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:09:30,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:09:30,819 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:09:30,819 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:09:30,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:09:30,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:09:30,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:09:30,821 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:09:30,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:09:30,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:09:30,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:09:30,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:09:30,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:09:30,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:09:30,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:09:30,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:09:30,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:09:30,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:09:30,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:09:30,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:09:30,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:09:30,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:09:30,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:09:30,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:30,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:09:30,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:09:30,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:09:30,827 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:09:30,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:09:30,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:09:30,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:09:30,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:09:30,829 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_b26cc691-8343-4039-84a4-e56a0105c2a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2021-11-07 01:09:31,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:09:31,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:09:31,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:09:31,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:09:31,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:09:31,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-07 01:09:31,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/98b815b36/9fcbdcc69b3c4ea0982aeac588280068/FLAG5e007d5f5 [2021-11-07 01:09:32,491 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:09:32,493 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2021-11-07 01:09:32,522 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/98b815b36/9fcbdcc69b3c4ea0982aeac588280068/FLAG5e007d5f5 [2021-11-07 01:09:32,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/data/98b815b36/9fcbdcc69b3c4ea0982aeac588280068 [2021-11-07 01:09:32,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:09:32,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:09:32,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:32,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:09:32,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:09:32,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:32" (1/1) ... [2021-11-07 01:09:32,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62addb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:32, skipping insertion in model container [2021-11-07 01:09:32,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:09:32" (1/1) ... [2021-11-07 01:09:32,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:09:32,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:33,382 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-07 01:09:33,400 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-07 01:09:33,579 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-07 01:09:33,581 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-07 01:09:33,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:33,626 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:09:33,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:09:33,744 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-07 01:09:33,747 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-07 01:09:33,837 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-07 01:09:33,838 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-07 01:09:33,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:33,876 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:09:33,932 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2021-11-07 01:09:33,935 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2021-11-07 01:09:34,070 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2021-11-07 01:09:34,073 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_b26cc691-8343-4039-84a4-e56a0105c2a3/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2021-11-07 01:09:34,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:09:34,232 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:09:34,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34 WrapperNode [2021-11-07 01:09:34,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:09:34,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:34,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:09:34,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:09:34,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:09:34,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:09:34,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:09:34,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:09:34,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:09:34,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:09:34,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:09:34,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:09:34,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (1/1) ... [2021-11-07 01:09:34,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:09:34,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:34,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:09:34,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:09:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:09:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:09:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:09:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:09:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:09:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:09:34,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:09:43,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:09:43,359 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-07 01:09:43,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:09:43 BoogieIcfgContainer [2021-11-07 01:09:43,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:09:43,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:09:43,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:09:43,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:09:43,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:09:32" (1/3) ... [2021-11-07 01:09:43,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:09:43, skipping insertion in model container [2021-11-07 01:09:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:09:34" (2/3) ... [2021-11-07 01:09:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac10cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:09:43, skipping insertion in model container [2021-11-07 01:09:43,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:09:43" (3/3) ... [2021-11-07 01:09:43,372 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2021-11-07 01:09:43,378 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:09:43,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-07 01:09:43,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:09:43,446 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 01:09:43,446 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-07 01:09:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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 01:09:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:09:43,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:43,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:43,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:09:43,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-07 01:09:43,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:43,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665444483] [2021-11-07 01:09:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:43,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:43,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:43,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:09:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:43,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:09:43,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:43,851 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 01:09:43,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:43,886 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 01:09:43,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:43,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665444483] [2021-11-07 01:09:43,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665444483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:43,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:43,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:09:43,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913162809] [2021-11-07 01:09:43,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:09:43,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:09:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:09:43,923 INFO L87 Difference]: Start difference. First operand has 276 states, 261 states have (on average 1.6666666666666667) internal successors, (435), 275 states have internal predecessors, (435), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:44,013 INFO L93 Difference]: Finished difference Result 544 states and 861 transitions. [2021-11-07 01:09:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:09:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:09:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:44,030 INFO L225 Difference]: With dead ends: 544 [2021-11-07 01:09:44,030 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 01:09:44,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 01:09:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 01:09:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-07 01:09:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 253 states have (on average 1.3241106719367588) internal successors, (335), 265 states have internal predecessors, (335), 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 01:09:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2021-11-07 01:09:44,114 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 8 [2021-11-07 01:09:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:44,115 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2021-11-07 01:09:44,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2021-11-07 01:09:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:09:44,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:44,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:44,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:09:44,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:44,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:09:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-07 01:09:44,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:44,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853781325] [2021-11-07 01:09:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:44,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:44,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:44,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:09:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:44,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:09:44,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:44,757 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 01:09:44,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:44,868 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 01:09:44,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:44,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853781325] [2021-11-07 01:09:44,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853781325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:44,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:44,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:09:44,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705771296] [2021-11-07 01:09:44,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:09:44,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:09:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:09:44,874 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 01:09:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:09:49,993 INFO L93 Difference]: Finished difference Result 701 states and 886 transitions. [2021-11-07 01:09:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:09:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-07 01:09:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:09:49,999 INFO L225 Difference]: With dead ends: 701 [2021-11-07 01:09:49,999 INFO L226 Difference]: Without dead ends: 433 [2021-11-07 01:09:50,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:09:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-07 01:09:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 378. [2021-11-07 01:09:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.326027397260274) internal successors, (484), 377 states have internal predecessors, (484), 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 01:09:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 484 transitions. [2021-11-07 01:09:50,038 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 484 transitions. Word has length 10 [2021-11-07 01:09:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:09:50,038 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 484 transitions. [2021-11-07 01:09:50,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 01:09:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 484 transitions. [2021-11-07 01:09:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:09:50,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:09:50,066 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:09:50,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:50,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:50,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:09:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:09:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-07 01:09:50,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:09:50,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757994575] [2021-11-07 01:09:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:50,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:09:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:09:50,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:09:50,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:09:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:50,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:09:50,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:50,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:09:50,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:09:50,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:09:50,757 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:09:50,758 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 01:09:50,854 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:09:50,854 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 01:09:50,902 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 01:09:50,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:51,004 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 01:09:51,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:09:51,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757994575] [2021-11-07 01:09:51,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757994575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:09:51,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:51,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:09:51,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876399124] [2021-11-07 01:09:51,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:09:51,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:09:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:09:51,008 INFO L87 Difference]: Start difference. First operand 378 states and 484 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:01,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:01,402 INFO L93 Difference]: Finished difference Result 822 states and 1044 transitions. [2021-11-07 01:10:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:10:01,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 01:10:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:01,409 INFO L225 Difference]: With dead ends: 822 [2021-11-07 01:10:01,410 INFO L226 Difference]: Without dead ends: 603 [2021-11-07 01:10:01,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 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 01:10:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-07 01:10:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 377. [2021-11-07 01:10:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 364 states have (on average 1.3241758241758241) internal successors, (482), 376 states have internal predecessors, (482), 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 01:10:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 482 transitions. [2021-11-07 01:10:01,457 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 482 transitions. Word has length 12 [2021-11-07 01:10:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:01,457 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 482 transitions. [2021-11-07 01:10:01,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:10:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 482 transitions. [2021-11-07 01:10:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:10:01,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:01,459 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 01:10:01,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:01,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:01,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-07 01:10:01,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:01,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35471669] [2021-11-07 01:10:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:01,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:01,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:01,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:10:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:02,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:02,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:02,236 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 01:10:02,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:02,405 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 01:10:02,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:02,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35471669] [2021-11-07 01:10:02,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35471669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:02,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:02,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:10:02,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626102271] [2021-11-07 01:10:02,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:10:02,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:10:02,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:02,409 INFO L87 Difference]: Start difference. First operand 377 states and 482 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 01:10:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:02,583 INFO L93 Difference]: Finished difference Result 752 states and 968 transitions. [2021-11-07 01:10:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:02,584 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 01:10:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:02,587 INFO L225 Difference]: With dead ends: 752 [2021-11-07 01:10:02,588 INFO L226 Difference]: Without dead ends: 385 [2021-11-07 01:10:02,589 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 01:10:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-07 01:10:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-07 01:10:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2756756756756757) internal successors, (472), 382 states have internal predecessors, (472), 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 01:10:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 472 transitions. [2021-11-07 01:10:02,609 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 472 transitions. Word has length 44 [2021-11-07 01:10:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:02,609 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 472 transitions. [2021-11-07 01:10:02,610 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 01:10:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 472 transitions. [2021-11-07 01:10:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:10:02,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:02,612 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 01:10:02,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:02,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:02,827 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-07 01:10:02,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:02,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558373672] [2021-11-07 01:10:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:02,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:02,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:02,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:02,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:10:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:03,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:03,340 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 01:10:03,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:03,465 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 01:10:03,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:03,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558373672] [2021-11-07 01:10:03,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558373672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:03,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:03,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:10:03,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761603633] [2021-11-07 01:10:03,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:10:03,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:10:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:10:03,476 INFO L87 Difference]: Start difference. First operand 383 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:10:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:07,905 INFO L93 Difference]: Finished difference Result 929 states and 1164 transitions. [2021-11-07 01:10:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:10:07,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:10:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:07,932 INFO L225 Difference]: With dead ends: 929 [2021-11-07 01:10:07,933 INFO L226 Difference]: Without dead ends: 927 [2021-11-07 01:10:07,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:10:07,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-07 01:10:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 381. [2021-11-07 01:10:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.2737127371273713) internal successors, (470), 380 states have internal predecessors, (470), 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 01:10:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2021-11-07 01:10:07,973 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 44 [2021-11-07 01:10:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:07,974 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2021-11-07 01:10:07,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:10:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2021-11-07 01:10:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:10:07,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:07,977 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:07,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:08,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:08,191 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:08,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:08,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-07 01:10:08,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:08,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980067922] [2021-11-07 01:10:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:08,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:08,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:08,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:10:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:08,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:08,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:08,861 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 01:10:08,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:09,110 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 01:10:09,111 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:09,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980067922] [2021-11-07 01:10:09,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980067922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:09,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:09,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:10:09,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214539897] [2021-11-07 01:10:09,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:09,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:09,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:09,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:09,113 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 01:10:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:11,924 INFO L93 Difference]: Finished difference Result 1293 states and 1622 transitions. [2021-11-07 01:10:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-07 01:10:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:11,934 INFO L225 Difference]: With dead ends: 1293 [2021-11-07 01:10:11,934 INFO L226 Difference]: Without dead ends: 958 [2021-11-07 01:10:11,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:11,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-11-07 01:10:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 473. [2021-11-07 01:10:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 472 states have internal predecessors, (581), 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 01:10:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 581 transitions. [2021-11-07 01:10:11,967 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 581 transitions. Word has length 51 [2021-11-07 01:10:11,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:11,970 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 581 transitions. [2021-11-07 01:10:11,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 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 01:10:11,971 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 581 transitions. [2021-11-07 01:10:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:10:11,978 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:11,978 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:10:12,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:12,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:12,197 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-07 01:10:12,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:12,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902173336] [2021-11-07 01:10:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:12,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:12,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:12,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:10:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:12,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:12,846 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 01:10:12,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:12,983 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 01:10:12,983 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:12,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902173336] [2021-11-07 01:10:12,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902173336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:12,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:10:12,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:10:12,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292822421] [2021-11-07 01:10:12,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:10:12,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:10:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:10:12,986 INFO L87 Difference]: Start difference. First operand 473 states and 581 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:10:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:13,118 INFO L93 Difference]: Finished difference Result 903 states and 1118 transitions. [2021-11-07 01:10:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:10:13,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 52 [2021-11-07 01:10:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:13,123 INFO L225 Difference]: With dead ends: 903 [2021-11-07 01:10:13,125 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 01:10:13,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 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 01:10:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 01:10:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-11-07 01:10:13,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 464 states have (on average 1.2586206896551724) internal successors, (584), 475 states have internal predecessors, (584), 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 01:10:13,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 584 transitions. [2021-11-07 01:10:13,158 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 584 transitions. Word has length 52 [2021-11-07 01:10:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:13,158 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 584 transitions. [2021-11-07 01:10:13,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:10:13,159 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 584 transitions. [2021-11-07 01:10:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:10:13,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:13,162 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] [2021-11-07 01:10:13,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:13,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:13,378 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-07 01:10:13,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:13,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942223250] [2021-11-07 01:10:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:13,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:13,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:13,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:13,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:10:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:13,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:10:13,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:14,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:10:14,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:14,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942223250] [2021-11-07 01:10:14,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942223250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:14,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2030463553] [2021-11-07 01:10:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:14,329 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:14,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:14,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:10:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:14,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:10:14,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:15,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:15,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2030463553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:15,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:10:15,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-07 01:10:15,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645836844] [2021-11-07 01:10:15,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:10:15,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:10:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:10:15,645 INFO L87 Difference]: Start difference. First operand 476 states and 584 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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 01:10:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:22,004 INFO L93 Difference]: Finished difference Result 2984 states and 3768 transitions. [2021-11-07 01:10:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:10:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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 54 [2021-11-07 01:10:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:22,026 INFO L225 Difference]: With dead ends: 2984 [2021-11-07 01:10:22,026 INFO L226 Difference]: Without dead ends: 2554 [2021-11-07 01:10:22,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:10:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-07 01:10:22,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 658. [2021-11-07 01:10:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 646 states have (on average 1.2337461300309598) internal successors, (797), 657 states have internal predecessors, (797), 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 01:10:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 797 transitions. [2021-11-07 01:10:22,091 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 797 transitions. Word has length 54 [2021-11-07 01:10:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:22,091 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 797 transitions. [2021-11-07 01:10:22,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 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 01:10:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 797 transitions. [2021-11-07 01:10:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:10:22,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:22,096 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] [2021-11-07 01:10:22,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:22,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:22,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:22,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-07 01:10:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:22,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389808140] [2021-11-07 01:10:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:22,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:22,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:22,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:10:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:23,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:10:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:23,481 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 01:10:23,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:23,808 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 01:10:23,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:23,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389808140] [2021-11-07 01:10:23,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389808140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:23,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1890988145] [2021-11-07 01:10:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:23,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:23,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:23,810 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:23,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:10:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:24,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:10:24,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:24,890 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 01:10:24,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:25,157 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 01:10:25,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1890988145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:25,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537336765] [2021-11-07 01:10:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:25,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:10:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:10:25,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:10:25,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:10:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:25,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:10:25,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:26,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:26,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:26,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:10:26,252 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:10:26,252 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 01:10:26,399 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:10:26,399 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 01:10:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:10:26,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:10:26,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537336765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:10:26,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:10:26,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:10:26,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273869681] [2021-11-07 01:10:26,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:10:26,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:10:26,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:10:26,746 INFO L87 Difference]: Start difference. First operand 658 states and 797 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 01:10:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:38,613 INFO L93 Difference]: Finished difference Result 885 states and 1084 transitions. [2021-11-07 01:10:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:10:38,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 82 [2021-11-07 01:10:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:38,621 INFO L225 Difference]: With dead ends: 885 [2021-11-07 01:10:38,621 INFO L226 Difference]: Without dead ends: 822 [2021-11-07 01:10:38,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:10:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-07 01:10:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 736. [2021-11-07 01:10:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 724 states have (on average 1.2458563535911602) internal successors, (902), 735 states have internal predecessors, (902), 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 01:10:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 902 transitions. [2021-11-07 01:10:38,670 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 902 transitions. Word has length 82 [2021-11-07 01:10:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:38,671 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 902 transitions. [2021-11-07 01:10:38,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 01:10:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 902 transitions. [2021-11-07 01:10:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:10:38,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:38,673 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] [2021-11-07 01:10:38,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:38,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:39,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:39,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:39,279 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:39,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-07 01:10:39,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:39,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009645225] [2021-11-07 01:10:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:39,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:39,283 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:39,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:10:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:40,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:10:40,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:40,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:40,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:10:40,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009645225] [2021-11-07 01:10:40,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009645225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:40,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1750600224] [2021-11-07 01:10:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:40,799 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:10:40,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:10:40,800 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:10:40,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:10:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:10:41,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:42,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:10:42,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1750600224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:42,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157114332] [2021-11-07 01:10:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:10:42,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:10:42,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:10:42,329 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:10:42,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:10:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:10:43,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:10:43,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:10:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:43,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:10:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:10:43,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157114332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:10:43,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:10:43,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:10:43,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417736047] [2021-11-07 01:10:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:10:43,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:10:43,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:10:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:10:43,606 INFO L87 Difference]: Start difference. First operand 736 states and 902 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 01:10:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:10:44,068 INFO L93 Difference]: Finished difference Result 1446 states and 1794 transitions. [2021-11-07 01:10:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:10:44,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 84 [2021-11-07 01:10:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:10:44,074 INFO L225 Difference]: With dead ends: 1446 [2021-11-07 01:10:44,075 INFO L226 Difference]: Without dead ends: 756 [2021-11-07 01:10:44,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 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 01:10:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-07 01:10:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-11-07 01:10:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 744 states have (on average 1.239247311827957) internal successors, (922), 755 states have internal predecessors, (922), 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 01:10:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 922 transitions. [2021-11-07 01:10:44,152 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 922 transitions. Word has length 84 [2021-11-07 01:10:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:10:44,152 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 922 transitions. [2021-11-07 01:10:44,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 01:10:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 922 transitions. [2021-11-07 01:10:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 01:10:44,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:10:44,161 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:44,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:44,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:44,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:10:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:10:44,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-07 01:10:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:10:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-07 01:10:44,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:10:44,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532366498] [2021-11-07 01:10:44,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:10:44,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:10:44,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:10:44,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:10:44,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:11:14,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:11:14,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:11:14,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:11:14,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:11:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:11:15,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:11:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:11:16,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:11:16,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532366498] [2021-11-07 01:11:16,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532366498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:11:16,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1086764947] [2021-11-07 01:11:16,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:11:16,447 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:11:16,448 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:11:16,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:12:13,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:12:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:12:13,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:12:13,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:12:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:13,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:12:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 01:12:14,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1086764947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:12:14,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543454231] [2021-11-07 01:12:14,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:12:14,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:12:14,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:14,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:12:14,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b26cc691-8343-4039-84a4-e56a0105c2a3/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process