./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:56:56,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:56:56,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:56:56,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:56:56,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:56:56,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:56:56,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:56:56,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:56:56,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:56:56,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:56:56,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:56:56,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:56:56,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:56:57,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:56:57,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:56:57,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:56:57,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:56:57,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:56:57,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:56:57,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:56:57,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:56:57,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:56:57,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:56:57,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:56:57,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:56:57,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:56:57,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:56:57,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:56:57,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:56:57,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:56:57,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:56:57,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:56:57,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:56:57,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:56:57,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:56:57,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:56:57,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:56:57,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:56:57,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:56:57,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:56:57,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:56:57,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:56:57,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:56:57,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:56:57,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:56:57,123 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:56:57,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:56:57,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:56:57,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:56:57,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:56:57,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:56:57,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:56:57,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:56:57,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:56:57,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:56:57,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:56:57,127 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:56:57,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:56:57,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:56:57,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:56:57,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:56:57,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:56:57,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:56:57,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:56:57,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:56:57,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:56:57,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:56:57,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:56:57,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:56:57,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:56:57,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:56:57,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:56:57,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:56:57,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:56:57,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:56:57,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:56:57,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:56:57,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:56:57,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:56:57,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:56:57,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:56:57,136 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_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2021-11-07 00:56:57,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:56:57,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:56:57,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:56:57,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:56:57,488 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:56:57,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-07 00:56:57,564 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/10ba4b0b3/1ceae02df5fa4d0c90b79ad9bc927c03/FLAGb4df89a25 [2021-11-07 00:56:58,447 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:56:58,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-07 00:56:58,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/10ba4b0b3/1ceae02df5fa4d0c90b79ad9bc927c03/FLAGb4df89a25 [2021-11-07 00:56:58,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/10ba4b0b3/1ceae02df5fa4d0c90b79ad9bc927c03 [2021-11-07 00:56:58,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:56:58,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:56:58,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:56:58,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:56:58,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:56:58,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:58" (1/1) ... [2021-11-07 00:56:58,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca8c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:58, skipping insertion in model container [2021-11-07 00:56:58,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:58" (1/1) ... [2021-11-07 00:56:58,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:56:59,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:56:59,827 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-07 00:57:00,160 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-07 00:57:00,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:00,204 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:57:00,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ffce66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:00, skipping insertion in model container [2021-11-07 00:57:00,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:00,205 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:57:00,208 INFO L168 Benchmark]: Toolchain (without parser) took 1229.08 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 64.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:00,209 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 111.1 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:57:00,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1225.93 ms. Allocated memory is still 111.1 MB. Free memory was 74.0 MB in the beginning and 65.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:00,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 111.1 MB. Free memory is still 65.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1225.93 ms. Allocated memory is still 111.1 MB. Free memory was 74.0 MB in the beginning and 65.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:57:03,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:57:03,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:57:03,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:57:03,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:57:03,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:57:03,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:57:03,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:57:03,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:57:03,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:57:03,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:57:03,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:57:03,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:57:03,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:57:03,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:57:03,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:57:03,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:57:03,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:57:03,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:57:03,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:57:03,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:57:03,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:57:03,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:57:03,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:57:03,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:57:03,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:57:03,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:57:03,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:57:03,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:57:03,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:57:03,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:57:03,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:57:03,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:57:03,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:57:03,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:57:03,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:57:03,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:57:03,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:57:03,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:57:03,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:57:03,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:57:03,263 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:57:03,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:57:03,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:57:03,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:57:03,328 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:57:03,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:57:03,329 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:57:03,329 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:57:03,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:57:03,330 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:57:03,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:57:03,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:57:03,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:57:03,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:57:03,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:57:03,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:57:03,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:57:03,335 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:57:03,335 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:57:03,335 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:57:03,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:57:03,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:57:03,336 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:57:03,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:57:03,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:57:03,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:57:03,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:57:03,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:03,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:57:03,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:57:03,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:57:03,339 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:57:03,339 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:03,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:57:03,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:57:03,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:57:03,340 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_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2021-11-07 00:57:03,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:57:03,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:57:03,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:57:03,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:57:03,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:57:03,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-07 00:57:04,015 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/d47532c73/e340cc032214449e8b483dc94ad7bc48/FLAGd21e98a6b [2021-11-07 00:57:04,981 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:04,982 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2021-11-07 00:57:05,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/d47532c73/e340cc032214449e8b483dc94ad7bc48/FLAGd21e98a6b [2021-11-07 00:57:05,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/data/d47532c73/e340cc032214449e8b483dc94ad7bc48 [2021-11-07 00:57:05,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:05,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:05,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:05,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:05,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:05,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:05" (1/1) ... [2021-11-07 00:57:05,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae0c71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:05, skipping insertion in model container [2021-11-07 00:57:05,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:05" (1/1) ... [2021-11-07 00:57:05,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:05,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:06,402 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-07 00:57:06,884 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-07 00:57:06,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:06,930 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:57:06,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:07,041 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-07 00:57:07,207 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-07 00:57:07,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:07,222 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:57:07,254 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2021-11-07 00:57:07,401 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_8cef134b-b863-4e90-b894-46429fb6db4f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2021-11-07 00:57:07,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:07,472 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:57:07,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07 WrapperNode [2021-11-07 00:57:07,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:07,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:07,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:57:07,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:57:07,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:07,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:07,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:07,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:57:07,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:57:07,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:57:07,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:07,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:07,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:07,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:08,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:08,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:08,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:08,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:57:08,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:57:08,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:57:08,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:57:08,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (1/1) ... [2021-11-07 00:57:08,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:08,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:08,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:57:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:57:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:57:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:57:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:57:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:57:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:57:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:57:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:57:21,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:57:21,906 INFO L299 CfgBuilder]: Removed 1075 assume(true) statements. [2021-11-07 00:57:21,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:21 BoogieIcfgContainer [2021-11-07 00:57:21,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:57:21,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:57:21,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:57:21,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:57:21,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:05" (1/3) ... [2021-11-07 00:57:21,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c65169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:21, skipping insertion in model container [2021-11-07 00:57:21,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:07" (2/3) ... [2021-11-07 00:57:21,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c65169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:21, skipping insertion in model container [2021-11-07 00:57:21,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:21" (3/3) ... [2021-11-07 00:57:21,923 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2021-11-07 00:57:21,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:57:21,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-07 00:57:22,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:57:22,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:57:22,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-07 00:57:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 00:57:22,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:22,106 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:22,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:22,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-07 00:57:22,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:22,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437736747] [2021-11-07 00:57:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:22,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:22,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:22,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:22,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:57:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:22,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:57:22,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:22,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:22,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:22,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437736747] [2021-11-07 00:57:22,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437736747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:22,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:22,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:57:22,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017168334] [2021-11-07 00:57:22,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:57:22,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:57:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:22,563 INFO L87 Difference]: Start difference. First operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:22,849 INFO L93 Difference]: Finished difference Result 4370 states and 6622 transitions. [2021-11-07 00:57:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:57:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 00:57:22,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:22,893 INFO L225 Difference]: With dead ends: 4370 [2021-11-07 00:57:22,893 INFO L226 Difference]: Without dead ends: 2153 [2021-11-07 00:57:22,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-07 00:57:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-07 00:57:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-07 00:57:23,124 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-07 00:57:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:23,125 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-07 00:57:23,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-07 00:57:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:57:23,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:23,130 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:23,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:23,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:23,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-07 00:57:23,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:23,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540509821] [2021-11-07 00:57:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:23,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:23,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:23,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:23,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:57:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:23,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:23,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:23,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:24,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:24,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540509821] [2021-11-07 00:57:24,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540509821] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:24,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:24,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 00:57:24,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036243722] [2021-11-07 00:57:24,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:57:24,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:24,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:57:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:57:24,215 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:24,504 INFO L93 Difference]: Finished difference Result 4224 states and 5293 transitions. [2021-11-07 00:57:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:24,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:57:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:24,521 INFO L225 Difference]: With dead ends: 4224 [2021-11-07 00:57:24,522 INFO L226 Difference]: Without dead ends: 2162 [2021-11-07 00:57:24,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2021-11-07 00:57:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2156. [2021-11-07 00:57:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1655 states have (on average 1.6283987915407856) internal successors, (2695), 2155 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 2695 transitions. [2021-11-07 00:57:24,598 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 2695 transitions. Word has length 44 [2021-11-07 00:57:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 2695 transitions. [2021-11-07 00:57:24,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 2695 transitions. [2021-11-07 00:57:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:57:24,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:24,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:24,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:24,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:24,824 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -317348363, now seen corresponding path program 1 times [2021-11-07 00:57:24,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:24,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412889405] [2021-11-07 00:57:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:24,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:24,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:24,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:57:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:25,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:57:25,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:25,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:26,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:26,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412889405] [2021-11-07 00:57:26,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412889405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:26,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:26,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 00:57:26,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458077880] [2021-11-07 00:57:26,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 00:57:26,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 00:57:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:26,136 INFO L87 Difference]: Start difference. First operand 2156 states and 2695 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:26,514 INFO L93 Difference]: Finished difference Result 4220 states and 5270 transitions. [2021-11-07 00:57:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:57:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:26,531 INFO L225 Difference]: With dead ends: 4220 [2021-11-07 00:57:26,531 INFO L226 Difference]: Without dead ends: 2155 [2021-11-07 00:57:26,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:57:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-11-07 00:57:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2150. [2021-11-07 00:57:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1649 states have (on average 1.6282595512431777) internal successors, (2685), 2149 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2685 transitions. [2021-11-07 00:57:26,604 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2685 transitions. Word has length 44 [2021-11-07 00:57:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:26,605 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 2685 transitions. [2021-11-07 00:57:26,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2685 transitions. [2021-11-07 00:57:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 00:57:26,608 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:26,608 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:26,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:26,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:26,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:26,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -575513801, now seen corresponding path program 1 times [2021-11-07 00:57:26,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:26,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982469086] [2021-11-07 00:57:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:26,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:26,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:26,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:26,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:57:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:27,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:27,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:27,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:57:27,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:57:27,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 00:57:27,358 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 00:57:27,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 00:57:27,455 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 00:57:27,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 00:57:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:27,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:27,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:27,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982469086] [2021-11-07 00:57:27,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982469086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:27,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:27,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:57:27,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014082858] [2021-11-07 00:57:27,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:57:27,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:57:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:27,876 INFO L87 Difference]: Start difference. First operand 2150 states and 2685 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:36,024 INFO L93 Difference]: Finished difference Result 8367 states and 10436 transitions. [2021-11-07 00:57:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:57:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 00:57:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:36,070 INFO L225 Difference]: With dead ends: 8367 [2021-11-07 00:57:36,071 INFO L226 Difference]: Without dead ends: 6307 [2021-11-07 00:57:36,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:57:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2021-11-07 00:57:36,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 2152. [2021-11-07 00:57:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1651 states have (on average 1.6274984857662023) internal successors, (2687), 2151 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2687 transitions. [2021-11-07 00:57:36,222 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2687 transitions. Word has length 44 [2021-11-07 00:57:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:36,222 INFO L470 AbstractCegarLoop]: Abstraction has 2152 states and 2687 transitions. [2021-11-07 00:57:36,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2687 transitions. [2021-11-07 00:57:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 00:57:36,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:36,232 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:36,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:36,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:36,450 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:36,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1988614245, now seen corresponding path program 1 times [2021-11-07 00:57:36,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:36,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354921455] [2021-11-07 00:57:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:36,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:36,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:36,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:36,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:57:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:36,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:36,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:37,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:37,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:37,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354921455] [2021-11-07 00:57:37,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354921455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:37,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:37,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 00:57:37,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281077470] [2021-11-07 00:57:37,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:57:37,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:57:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:57:37,677 INFO L87 Difference]: Start difference. First operand 2152 states and 2687 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:37,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:37,895 INFO L93 Difference]: Finished difference Result 4309 states and 5382 transitions. [2021-11-07 00:57:37,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:37,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 00:57:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:37,911 INFO L225 Difference]: With dead ends: 4309 [2021-11-07 00:57:37,911 INFO L226 Difference]: Without dead ends: 2161 [2021-11-07 00:57:37,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2021-11-07 00:57:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2155. [2021-11-07 00:57:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6215235792019347) internal successors, (2682), 2154 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2682 transitions. [2021-11-07 00:57:38,031 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2682 transitions. Word has length 96 [2021-11-07 00:57:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:38,032 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2682 transitions. [2021-11-07 00:57:38,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2682 transitions. [2021-11-07 00:57:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 00:57:38,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:38,034 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:38,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:38,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:38,249 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-07 00:57:38,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:38,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134299083] [2021-11-07 00:57:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:38,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:38,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:38,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:38,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:57:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:38,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:38,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:39,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:40,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:40,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134299083] [2021-11-07 00:57:40,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134299083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:40,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:40,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:57:40,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502496363] [2021-11-07 00:57:40,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:57:40,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:57:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:57:40,172 INFO L87 Difference]: Start difference. First operand 2155 states and 2682 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:41,086 INFO L93 Difference]: Finished difference Result 6390 states and 7950 transitions. [2021-11-07 00:57:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:57:41,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-07 00:57:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:41,121 INFO L225 Difference]: With dead ends: 6390 [2021-11-07 00:57:41,121 INFO L226 Difference]: Without dead ends: 4239 [2021-11-07 00:57:41,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:57:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-07 00:57:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3237. [2021-11-07 00:57:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2736 states have (on average 1.7430555555555556) internal successors, (4769), 3236 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4769 transitions. [2021-11-07 00:57:41,247 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4769 transitions. Word has length 96 [2021-11-07 00:57:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:41,248 INFO L470 AbstractCegarLoop]: Abstraction has 3237 states and 4769 transitions. [2021-11-07 00:57:41,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4769 transitions. [2021-11-07 00:57:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 00:57:41,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:41,258 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:41,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:41,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:41,473 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-07 00:57:41,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:41,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034712038] [2021-11-07 00:57:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:41,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:41,477 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:41,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:57:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:42,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:42,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:42,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:42,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:42,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034712038] [2021-11-07 00:57:42,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034712038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:42,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:42,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:57:42,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331362113] [2021-11-07 00:57:42,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:42,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:42,880 INFO L87 Difference]: Start difference. First operand 3237 states and 4769 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:42,999 INFO L93 Difference]: Finished difference Result 6432 states and 9495 transitions. [2021-11-07 00:57:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:43,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 103 [2021-11-07 00:57:43,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:43,023 INFO L225 Difference]: With dead ends: 6432 [2021-11-07 00:57:43,024 INFO L226 Difference]: Without dead ends: 3240 [2021-11-07 00:57:43,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:57:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-11-07 00:57:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 3240. [2021-11-07 00:57:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2739 states have (on average 1.742241694048923) internal successors, (4772), 3239 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 4772 transitions. [2021-11-07 00:57:43,132 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 4772 transitions. Word has length 103 [2021-11-07 00:57:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:43,135 INFO L470 AbstractCegarLoop]: Abstraction has 3240 states and 4772 transitions. [2021-11-07 00:57:43,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 4772 transitions. [2021-11-07 00:57:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 00:57:43,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:43,138 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:43,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:43,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:43,354 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash -785976308, now seen corresponding path program 1 times [2021-11-07 00:57:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:43,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507779913] [2021-11-07 00:57:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:43,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:43,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:43,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:57:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:44,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:44,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:45,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:45,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507779913] [2021-11-07 00:57:45,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507779913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:45,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081579043] [2021-11-07 00:57:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:45,010 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:45,013 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:45,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 00:57:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:45,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:45,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:57:46,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:57:47,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081579043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:47,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:57:47,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 00:57:47,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651809455] [2021-11-07 00:57:47,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:47,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:47,036 INFO L87 Difference]: Start difference. First operand 3240 states and 4772 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:50,973 INFO L93 Difference]: Finished difference Result 5394 states and 7453 transitions. [2021-11-07 00:57:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 106 [2021-11-07 00:57:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:50,991 INFO L225 Difference]: With dead ends: 5394 [2021-11-07 00:57:50,991 INFO L226 Difference]: Without dead ends: 2199 [2021-11-07 00:57:50,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:57:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-07 00:57:51,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2199. [2021-11-07 00:57:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 1698 states have (on average 1.6065959952885749) internal successors, (2728), 2198 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2728 transitions. [2021-11-07 00:57:51,066 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2728 transitions. Word has length 106 [2021-11-07 00:57:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:51,067 INFO L470 AbstractCegarLoop]: Abstraction has 2199 states and 2728 transitions. [2021-11-07 00:57:51,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2728 transitions. [2021-11-07 00:57:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 00:57:51,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:51,070 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:51,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:51,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:51,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:51,475 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 530701390, now seen corresponding path program 1 times [2021-11-07 00:57:51,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:51,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041123366] [2021-11-07 00:57:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:51,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:51,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:51,479 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:51,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:57:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:52,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:52,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:52,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:53,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:53,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041123366] [2021-11-07 00:57:53,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041123366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:53,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [958603490] [2021-11-07 00:57:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:53,153 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:53,161 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:53,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 00:57:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:57:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:54,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:57:55,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [958603490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:55,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180729307] [2021-11-07 00:57:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:55,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:57:55,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:55,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:57:55,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 00:57:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:56,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:57:56,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:57:56,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:57:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180729307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:56,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:57:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 00:57:56,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778824002] [2021-11-07 00:57:56,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:57:56,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:56,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:57:56,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:56,825 INFO L87 Difference]: Start difference. First operand 2199 states and 2728 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:57,214 INFO L93 Difference]: Finished difference Result 4356 states and 5417 transitions. [2021-11-07 00:57:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:57:57,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 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 113 [2021-11-07 00:57:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:57,228 INFO L225 Difference]: With dead ends: 4356 [2021-11-07 00:57:57,228 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 00:57:57,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:57:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 00:57:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-07 00:57:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1706 states have (on average 1.6037514654161782) internal successors, (2736), 2206 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2736 transitions. [2021-11-07 00:57:57,317 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2736 transitions. Word has length 113 [2021-11-07 00:57:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:57,317 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 2736 transitions. [2021-11-07 00:57:57,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2736 transitions. [2021-11-07 00:57:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 00:57:57,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:57,320 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:57,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:57,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:57,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:57,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:57,943 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:57:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1097119218, now seen corresponding path program 2 times [2021-11-07 00:57:57,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:57,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323067963] [2021-11-07 00:57:57,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:57:57,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:57,946 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:57,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:57:59,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:57:59,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:57:59,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:57:59,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:57:59,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:58:00,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:00,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323067963] [2021-11-07 00:58:00,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323067963] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:00,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2060076524] [2021-11-07 00:58:00,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:58:00,296 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:00,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:00,297 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:00,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 00:58:02,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:58:02,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:58:02,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:58:02,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:58:02,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:58:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2060076524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:02,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933338319] [2021-11-07 00:58:02,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:58:02,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:58:02,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:58:02,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:58:02,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 00:58:04,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:58:04,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:58:04,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 00:58:04,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 00:58:04,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 00:58:05,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933338319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:05,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:58:05,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 00:58:05,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399185915] [2021-11-07 00:58:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 00:58:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 00:58:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 00:58:05,716 INFO L87 Difference]: Start difference. First operand 2207 states and 2736 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:11,337 INFO L93 Difference]: Finished difference Result 6523 states and 8120 transitions. [2021-11-07 00:58:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 00:58:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 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 121 [2021-11-07 00:58:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:11,399 INFO L225 Difference]: With dead ends: 6523 [2021-11-07 00:58:11,400 INFO L226 Difference]: Without dead ends: 4370 [2021-11-07 00:58:11,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 00:58:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-11-07 00:58:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2229. [2021-11-07 00:58:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1728 states have (on average 1.5966435185185186) internal successors, (2759), 2228 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2759 transitions. [2021-11-07 00:58:11,554 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2759 transitions. Word has length 121 [2021-11-07 00:58:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:11,554 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 2759 transitions. [2021-11-07 00:58:11,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2759 transitions. [2021-11-07 00:58:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 00:58:11,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:11,557 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:11,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:11,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 00:58:11,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:12,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:58:12,165 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-07 00:58:12,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1558493810, now seen corresponding path program 3 times [2021-11-07 00:58:12,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:12,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506922977] [2021-11-07 00:58:12,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:58:12,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:12,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:12,169 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:12,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 00:58:19,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 00:58:19,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:58:19,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:58:19,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 00:58:20,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 00:58:22,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:22,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506922977] [2021-11-07 00:58:22,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506922977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:22,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1053518523] [2021-11-07 00:58:22,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:58:22,332 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:22,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:58:22,333 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:58:22,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 00:59:26,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 00:59:26,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:59:26,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:59:26,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 00:59:27,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 00:59:27,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1053518523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:27,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824776929] [2021-11-07 00:59:27,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:59:27,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:59:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:59:27,969 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:59:27,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cef134b-b863-4e90-b894-46429fb6db4f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process