./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH --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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:02,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:02,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:02,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:02,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:02,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:02,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:02,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:02,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:02,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:02,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:02,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:02,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:02,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:02,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:02,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:02,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:02,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:02,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:02,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:02,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:02,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:02,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:02,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:02,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:02,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:02,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:02,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:02,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:02,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:02,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:02,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:02,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:02,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:02,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:02,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:02,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:02,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:02,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:02,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:02,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:02,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:40:02,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:02,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:02,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:02,140 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:02,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:02,140 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:02,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:02,141 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:02,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:02,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:02,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:02,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:02,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:02,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:02,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:02,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:02,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:02,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:02,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:02,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:02,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:02,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:02,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:02,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:02,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:02,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:02,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:02,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:02,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:02,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:02,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:02,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:02,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:02,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:02,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:02,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:02,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:02,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:02,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:02,148 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_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-03 03:40:02,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:02,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:02,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:02,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:02,507 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:02,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-03 03:40:02,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/529cbe844/8c95a06261e44dc3a1128a568bec4c20/FLAGa0018ac41 [2021-11-03 03:40:03,424 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:03,425 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-03 03:40:03,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/529cbe844/8c95a06261e44dc3a1128a568bec4c20/FLAGa0018ac41 [2021-11-03 03:40:03,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/529cbe844/8c95a06261e44dc3a1128a568bec4c20 [2021-11-03 03:40:03,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:03,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:03,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:03,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:03,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:03,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a1e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03, skipping insertion in model container [2021-11-03 03:40:03,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:03" (1/1) ... [2021-11-03 03:40:03,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:03,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:04,349 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-03 03:40:04,362 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-03 03:40:04,508 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-03 03:40:04,511 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-03 03:40:04,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:04,541 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) [2021-11-03 03:40:04,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d6f3657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:04, skipping insertion in model container [2021-11-03 03:40:04,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:04,542 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:40:04,549 INFO L168 Benchmark]: Toolchain (without parser) took 965.62 ms. Allocated memory is still 115.3 MB. Free memory was 84.5 MB in the beginning and 77.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:04,550 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:04,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 963.00 ms. Allocated memory is still 115.3 MB. Free memory was 84.3 MB in the beginning and 77.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:04,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 963.00 ms. Allocated memory is still 115.3 MB. Free memory was 84.3 MB in the beginning and 77.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 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_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH --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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:07,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:07,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:07,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:07,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:07,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:07,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:07,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:07,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:07,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:07,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:07,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:07,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:07,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:07,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:07,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:07,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:07,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:07,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:07,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:07,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:07,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:07,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:07,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:07,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:07,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:07,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:07,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:07,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:07,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:07,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:07,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:07,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:07,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:07,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:07,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:07,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:07,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:07,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:07,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:07,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:07,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:40:07,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:07,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:07,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:07,208 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:07,208 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:07,208 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:07,208 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:07,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:07,209 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:07,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:07,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:07,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:07,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:07,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:07,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:07,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:07,211 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:07,211 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:40:07,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:40:07,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:07,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:07,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:07,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:07,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:07,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:40:07,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:07,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:07,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:07,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:07,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:07,217 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:40:07,217 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:07,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:07,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:07,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:07,218 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_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-03 03:40:07,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:07,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:07,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:07,649 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:07,649 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:07,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-03 03:40:07,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/5e7cef7b6/49dba2db2c124bec90776d1bbee6fdcd/FLAGe0bb237d6 [2021-11-03 03:40:08,558 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:08,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-03 03:40:08,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/5e7cef7b6/49dba2db2c124bec90776d1bbee6fdcd/FLAGe0bb237d6 [2021-11-03 03:40:08,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/data/5e7cef7b6/49dba2db2c124bec90776d1bbee6fdcd [2021-11-03 03:40:08,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:08,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:08,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:08,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:08,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:08,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f59e6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08, skipping insertion in model container [2021-11-03 03:40:08,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:08,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:09,431 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-03 03:40:09,443 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-03 03:40:09,564 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-03 03:40:09,565 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-03 03:40:09,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:09,597 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:40:09,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:09,679 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-03 03:40:09,682 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-03 03:40:09,749 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-03 03:40:09,750 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-03 03:40:09,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:09,778 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:09,817 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-03 03:40:09,820 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-03 03:40:09,898 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-03 03:40:09,899 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_f82d3694-d883-4f20-a3b7-940bd6218b77/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-03 03:40:09,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:10,016 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:10,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10 WrapperNode [2021-11-03 03:40:10,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:10,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:10,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:10,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:10,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:10,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:10,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:10,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:10,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:10,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:10,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:10,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:10,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (1/1) ... [2021-11-03 03:40:10,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:10,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:40:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:40:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:40:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:40:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:10,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:18,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:18,350 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 03:40:18,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:18 BoogieIcfgContainer [2021-11-03 03:40:18,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:18,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:18,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:18,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:18,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:08" (1/3) ... [2021-11-03 03:40:18,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42507fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:18, skipping insertion in model container [2021-11-03 03:40:18,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:10" (2/3) ... [2021-11-03 03:40:18,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42507fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:18, skipping insertion in model container [2021-11-03 03:40:18,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:18" (3/3) ... [2021-11-03 03:40:18,364 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-11-03 03:40:18,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:18,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-03 03:40:18,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:18,433 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 [2021-11-03 03:40:18,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 03:40:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 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) [2021-11-03 03:40:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:40:18,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:18,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:18,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1030621672, now seen corresponding path program 1 times [2021-11-03 03:40:18,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:18,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950589498] [2021-11-03 03:40:18,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:18,511 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:18,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:18,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:18,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:40:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:18,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:40:18,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:18,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:18,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:18,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950589498] [2021-11-03 03:40:18,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950589498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:18,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:18,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:40:18,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54511664] [2021-11-03 03:40:18,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:40:18,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:18,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:40:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:40:18,948 INFO L87 Difference]: Start difference. First operand has 237 states, 224 states have (on average 1.6696428571428572) internal successors, (374), 236 states have internal predecessors, (374), 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) [2021-11-03 03:40:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:19,034 INFO L93 Difference]: Finished difference Result 466 states and 739 transitions. [2021-11-03 03:40:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:40:19,036 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 [2021-11-03 03:40:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:19,063 INFO L225 Difference]: With dead ends: 466 [2021-11-03 03:40:19,064 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 03:40:19,070 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 [2021-11-03 03:40:19,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 03:40:19,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 03:40:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 226 states have internal predecessors, (285), 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) [2021-11-03 03:40:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 285 transitions. [2021-11-03 03:40:19,164 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 285 transitions. Word has length 8 [2021-11-03 03:40:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:19,165 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 285 transitions. [2021-11-03 03:40:19,165 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) [2021-11-03 03:40:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 285 transitions. [2021-11-03 03:40:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 03:40:19,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:19,168 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:19,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:19,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:19,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:19,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1260005844, now seen corresponding path program 1 times [2021-11-03 03:40:19,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:19,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632413150] [2021-11-03 03:40:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:19,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:19,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:19,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:40:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:19,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:19,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:19,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:19,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:19,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632413150] [2021-11-03 03:40:19,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632413150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:19,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:19,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 03:40:19,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573593713] [2021-11-03 03:40:20,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:20,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:20,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:20,007 INFO L87 Difference]: Start difference. First operand 227 states and 285 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) [2021-11-03 03:40:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:25,735 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2021-11-03 03:40:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:25,736 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 [2021-11-03 03:40:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:25,739 INFO L225 Difference]: With dead ends: 583 [2021-11-03 03:40:25,740 INFO L226 Difference]: Without dead ends: 358 [2021-11-03 03:40:25,742 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 [2021-11-03 03:40:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-03 03:40:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 333. [2021-11-03 03:40:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 322 states have (on average 1.3229813664596273) internal successors, (426), 332 states have internal predecessors, (426), 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) [2021-11-03 03:40:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 426 transitions. [2021-11-03 03:40:25,766 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 426 transitions. Word has length 10 [2021-11-03 03:40:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:25,767 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 426 transitions. [2021-11-03 03:40:25,767 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) [2021-11-03 03:40:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 426 transitions. [2021-11-03 03:40:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 03:40:25,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:25,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:25,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:25,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:25,983 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash -315185698, now seen corresponding path program 1 times [2021-11-03 03:40:25,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:25,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339407752] [2021-11-03 03:40:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:25,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:25,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:40:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:26,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:26,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:26,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:26,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:26,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:26,438 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:40:26,439 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 [2021-11-03 03:40:26,556 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:40:26,557 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 [2021-11-03 03:40:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:26,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:26,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:26,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339407752] [2021-11-03 03:40:26,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339407752] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:26,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:26,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:26,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724119365] [2021-11-03 03:40:26,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:26,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:26,738 INFO L87 Difference]: Start difference. First operand 333 states and 426 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) [2021-11-03 03:40:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:36,328 INFO L93 Difference]: Finished difference Result 700 states and 888 transitions. [2021-11-03 03:40:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:36,330 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 [2021-11-03 03:40:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:36,334 INFO L225 Difference]: With dead ends: 700 [2021-11-03 03:40:36,334 INFO L226 Difference]: Without dead ends: 526 [2021-11-03 03:40:36,335 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 [2021-11-03 03:40:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-03 03:40:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 332. [2021-11-03 03:40:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 321 states have (on average 1.320872274143302) internal successors, (424), 331 states have internal predecessors, (424), 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) [2021-11-03 03:40:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 424 transitions. [2021-11-03 03:40:36,366 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 424 transitions. Word has length 12 [2021-11-03 03:40:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:36,366 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 424 transitions. [2021-11-03 03:40:36,367 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) [2021-11-03 03:40:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 424 transitions. [2021-11-03 03:40:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:36,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:36,369 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] [2021-11-03 03:40:36,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:36,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:36,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash -602340381, now seen corresponding path program 1 times [2021-11-03 03:40:36,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:36,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750618083] [2021-11-03 03:40:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:36,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:36,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:36,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:36,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:40:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:36,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:37,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:37,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:37,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750618083] [2021-11-03 03:40:37,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750618083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:37,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:37,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:37,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352152186] [2021-11-03 03:40:37,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:37,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:37,289 INFO L87 Difference]: Start difference. First operand 332 states and 424 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) [2021-11-03 03:40:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:37,476 INFO L93 Difference]: Finished difference Result 662 states and 852 transitions. [2021-11-03 03:40:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:37,477 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 [2021-11-03 03:40:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:37,480 INFO L225 Difference]: With dead ends: 662 [2021-11-03 03:40:37,480 INFO L226 Difference]: Without dead ends: 340 [2021-11-03 03:40:37,481 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 [2021-11-03 03:40:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-03 03:40:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2021-11-03 03:40:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 327 states have (on average 1.2660550458715596) internal successors, (414), 337 states have internal predecessors, (414), 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) [2021-11-03 03:40:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 414 transitions. [2021-11-03 03:40:37,503 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 414 transitions. Word has length 44 [2021-11-03 03:40:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:37,503 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 414 transitions. [2021-11-03 03:40:37,503 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) [2021-11-03 03:40:37,504 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 414 transitions. [2021-11-03 03:40:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:37,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:37,506 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] [2021-11-03 03:40:37,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:37,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:37,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1704043945, now seen corresponding path program 1 times [2021-11-03 03:40:37,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:37,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488766098] [2021-11-03 03:40:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:37,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:37,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:37,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:40:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:38,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:38,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:38,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:38,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:38,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488766098] [2021-11-03 03:40:38,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488766098] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:38,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:38,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:38,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736992262] [2021-11-03 03:40:38,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:38,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:38,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:38,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:38,343 INFO L87 Difference]: Start difference. First operand 338 states and 414 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) [2021-11-03 03:40:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:44,831 INFO L93 Difference]: Finished difference Result 882 states and 1104 transitions. [2021-11-03 03:40:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 03:40:44,848 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 [2021-11-03 03:40:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:44,855 INFO L225 Difference]: With dead ends: 882 [2021-11-03 03:40:44,856 INFO L226 Difference]: Without dead ends: 880 [2021-11-03 03:40:44,857 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 [2021-11-03 03:40:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2021-11-03 03:40:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 336. [2021-11-03 03:40:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 335 states have internal predecessors, (412), 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) [2021-11-03 03:40:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 412 transitions. [2021-11-03 03:40:44,885 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 412 transitions. Word has length 44 [2021-11-03 03:40:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:44,886 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 412 transitions. [2021-11-03 03:40:44,886 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) [2021-11-03 03:40:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 412 transitions. [2021-11-03 03:40:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 03:40:44,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:44,889 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] [2021-11-03 03:40:44,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:45,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1088553020, now seen corresponding path program 1 times [2021-11-03 03:40:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048371883] [2021-11-03 03:40:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:45,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:45,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:45,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:45,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:40:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:45,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:45,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:45,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:46,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:46,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048371883] [2021-11-03 03:40:46,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048371883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:46,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:46,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:40:46,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705688750] [2021-11-03 03:40:46,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:46,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:46,229 INFO L87 Difference]: Start difference. First operand 336 states and 412 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) [2021-11-03 03:40:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:49,078 INFO L93 Difference]: Finished difference Result 1128 states and 1405 transitions. [2021-11-03 03:40:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:49,079 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 [2021-11-03 03:40:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:49,085 INFO L225 Difference]: With dead ends: 1128 [2021-11-03 03:40:49,086 INFO L226 Difference]: Without dead ends: 838 [2021-11-03 03:40:49,087 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 [2021-11-03 03:40:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-03 03:40:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 428. [2021-11-03 03:40:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 418 states have (on average 1.2511961722488039) internal successors, (523), 427 states have internal predecessors, (523), 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) [2021-11-03 03:40:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 523 transitions. [2021-11-03 03:40:49,122 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 523 transitions. Word has length 51 [2021-11-03 03:40:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:49,122 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 523 transitions. [2021-11-03 03:40:49,123 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) [2021-11-03 03:40:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 523 transitions. [2021-11-03 03:40:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:40:49,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:49,125 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] [2021-11-03 03:40:49,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 03:40:49,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,340 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 493379014, now seen corresponding path program 1 times [2021-11-03 03:40:49,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:49,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942320189] [2021-11-03 03:40:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:49,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:49,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:49,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:49,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:40:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:50,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:50,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942320189] [2021-11-03 03:40:50,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942320189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:50,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:50,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:40:50,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904613037] [2021-11-03 03:40:50,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:50,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:50,201 INFO L87 Difference]: Start difference. First operand 428 states and 523 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) [2021-11-03 03:40:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:50,296 INFO L93 Difference]: Finished difference Result 813 states and 1002 transitions. [2021-11-03 03:40:50,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:50,297 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 [2021-11-03 03:40:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:50,300 INFO L225 Difference]: With dead ends: 813 [2021-11-03 03:40:50,301 INFO L226 Difference]: Without dead ends: 431 [2021-11-03 03:40:50,302 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 [2021-11-03 03:40:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-03 03:40:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-03 03:40:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 421 states have (on average 1.2494061757719714) internal successors, (526), 430 states have internal predecessors, (526), 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) [2021-11-03 03:40:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 526 transitions. [2021-11-03 03:40:50,332 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 526 transitions. Word has length 52 [2021-11-03 03:40:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:50,333 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 526 transitions. [2021-11-03 03:40:50,333 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) [2021-11-03 03:40:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 526 transitions. [2021-11-03 03:40:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 03:40:50,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:50,335 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] [2021-11-03 03:40:50,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:50,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:50,556 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1169148346, now seen corresponding path program 1 times [2021-11-03 03:40:50,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:50,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218890471] [2021-11-03 03:40:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:50,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:50,559 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:40:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:51,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:40:51,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:51,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:51,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:51,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218890471] [2021-11-03 03:40:51,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218890471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:51,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [566097389] [2021-11-03 03:40:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:51,512 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:51,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:40:51,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:40:51,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 03:40:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:52,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:52,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:40:52,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:40:52,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [566097389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:52,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:40:52,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 14 [2021-11-03 03:40:52,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503192708] [2021-11-03 03:40:52,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:40:52,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:40:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-03 03:40:52,929 INFO L87 Difference]: Start difference. First operand 431 states and 526 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) [2021-11-03 03:40:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:59,180 INFO L93 Difference]: Finished difference Result 2564 states and 3218 transitions. [2021-11-03 03:40:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 03:40:59,182 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 [2021-11-03 03:40:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:59,200 INFO L225 Difference]: With dead ends: 2564 [2021-11-03 03:40:59,200 INFO L226 Difference]: Without dead ends: 2179 [2021-11-03 03:40:59,202 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 [2021-11-03 03:40:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2021-11-03 03:40:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 613. [2021-11-03 03:40:59,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 603 states have (on average 1.2255389718076286) internal successors, (739), 612 states have internal predecessors, (739), 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) [2021-11-03 03:40:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 739 transitions. [2021-11-03 03:40:59,277 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 739 transitions. Word has length 54 [2021-11-03 03:40:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:59,278 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 739 transitions. [2021-11-03 03:40:59,278 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) [2021-11-03 03:40:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 739 transitions. [2021-11-03 03:40:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 03:40:59,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:59,287 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] [2021-11-03 03:40:59,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:59,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:59,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:59,692 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:40:59,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1213483017, now seen corresponding path program 1 times [2021-11-03 03:40:59,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:59,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822259703] [2021-11-03 03:40:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:59,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:59,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:59,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:41:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:00,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:41:00,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:00,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:01,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:01,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822259703] [2021-11-03 03:41:01,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822259703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:01,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1818741851] [2021-11-03 03:41:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:01,084 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:01,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:01,086 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 03:41:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:01,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:41:01,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:02,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:02,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1818741851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:02,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978227600] [2021-11-03 03:41:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:02,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:02,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:02,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 03:41:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:41:03,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:03,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:41:03,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:41:03,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:41:03,551 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:41:03,551 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 [2021-11-03 03:41:03,692 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:41:03,692 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 [2021-11-03 03:41:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:03,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 03:41:04,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978227600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:41:04,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 03:41:04,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-03 03:41:04,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843804886] [2021-11-03 03:41:04,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:41:04,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:04,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:41:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:41:04,054 INFO L87 Difference]: Start difference. First operand 613 states and 739 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) [2021-11-03 03:41:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:15,642 INFO L93 Difference]: Finished difference Result 795 states and 968 transitions. [2021-11-03 03:41:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:41:15,644 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 [2021-11-03 03:41:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:15,650 INFO L225 Difference]: With dead ends: 795 [2021-11-03 03:41:15,650 INFO L226 Difference]: Without dead ends: 777 [2021-11-03 03:41:15,651 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 [2021-11-03 03:41:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-03 03:41:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 691. [2021-11-03 03:41:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 681 states have (on average 1.2393538913362703) internal successors, (844), 690 states have internal predecessors, (844), 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) [2021-11-03 03:41:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 844 transitions. [2021-11-03 03:41:15,698 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 844 transitions. Word has length 82 [2021-11-03 03:41:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:15,698 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 844 transitions. [2021-11-03 03:41:15,699 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) [2021-11-03 03:41:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 844 transitions. [2021-11-03 03:41:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 03:41:15,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:15,700 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] [2021-11-03 03:41:15,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:15,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:16,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-03 03:41:16,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:16,325 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:41:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1602172737, now seen corresponding path program 1 times [2021-11-03 03:41:16,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:16,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587342390] [2021-11-03 03:41:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:16,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:16,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:16,327 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:16,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:41:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:17,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:41:17,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:17,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:17,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:17,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587342390] [2021-11-03 03:41:17,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587342390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:17,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [235309696] [2021-11-03 03:41:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:17,769 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:17,784 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:17,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 03:41:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:41:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:19,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:41:19,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [235309696] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:19,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554800074] [2021-11-03 03:41:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:41:19,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:19,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:41:19,408 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:41:19,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 03:41:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:41:20,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:41:20,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:41:20,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:41:20,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554800074] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:20,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:41:20,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 03:41:20,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053076603] [2021-11-03 03:41:20,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:41:20,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:41:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:41:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:41:20,695 INFO L87 Difference]: Start difference. First operand 691 states and 844 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) [2021-11-03 03:41:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:41:21,075 INFO L93 Difference]: Finished difference Result 1356 states and 1678 transitions. [2021-11-03 03:41:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:41:21,076 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 [2021-11-03 03:41:21,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:41:21,081 INFO L225 Difference]: With dead ends: 1356 [2021-11-03 03:41:21,081 INFO L226 Difference]: Without dead ends: 711 [2021-11-03 03:41:21,083 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 [2021-11-03 03:41:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-11-03 03:41:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-11-03 03:41:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 701 states have (on average 1.2325249643366618) internal successors, (864), 710 states have internal predecessors, (864), 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) [2021-11-03 03:41:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 864 transitions. [2021-11-03 03:41:21,140 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 864 transitions. Word has length 84 [2021-11-03 03:41:21,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:41:21,140 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 864 transitions. [2021-11-03 03:41:21,141 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) [2021-11-03 03:41:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 864 transitions. [2021-11-03 03:41:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 03:41:21,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:41:21,142 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] [2021-11-03 03:41:21,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:41:21,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:41:21,760 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 03:41:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:41:21,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1971016961, now seen corresponding path program 2 times [2021-11-03 03:41:21,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:41:21,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951373518] [2021-11-03 03:41:21,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:41:21,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:41:21,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:41:21,763 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:41:21,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:41:31,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:41:31,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:31,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:41:31,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:41:32,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:41:32,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:32,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951373518] [2021-11-03 03:41:32,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951373518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:32,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1254746969] [2021-11-03 03:41:32,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:41:32,797 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:32,798 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:32,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 03:43:09,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:43:09,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:09,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:43:09,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:09,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:43:10,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1254746969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:10,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581116159] [2021-11-03 03:43:10,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:43:10,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:43:10,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:10,081 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:43:10,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f82d3694-d883-4f20-a3b7-940bd6218b77/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process