./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:11,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:11,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:11,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:11,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:11,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:11,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:11,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:11,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:11,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:11,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:11,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:11,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:11,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:11,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:11,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:11,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:11,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:11,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:11,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:11,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:11,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:11,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:11,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:11,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:11,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:11,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:11,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:11,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:11,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:11,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:11,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:11,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:11,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:11,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:11,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:11,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:11,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:11,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:11,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:11,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:11,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:49:12,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:12,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:12,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:12,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:12,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:12,063 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:12,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:49:12,063 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:12,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:12,072 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:49:12,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:49:12,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:12,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:49:12,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:49:12,074 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:49:12,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:12,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:49:12,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:49:12,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:49:12,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:12,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:12,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:12,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:12,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:12,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:49:12,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:12,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:12,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:12,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:12,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:12,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:12,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:12,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:12,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:12,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:49:12,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:49:12,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:12,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:12,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:12,086 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2021-11-07 01:49:12,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:12,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:12,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:12,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:12,443 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:12,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-07 01:49:12,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/1ce2e6da6/912fc71a9a0242e280f22f6d7f14083c/FLAGeda9f173c [2021-11-07 01:49:13,214 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:13,214 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-07 01:49:13,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/1ce2e6da6/912fc71a9a0242e280f22f6d7f14083c/FLAGeda9f173c [2021-11-07 01:49:13,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/1ce2e6da6/912fc71a9a0242e280f22f6d7f14083c [2021-11-07 01:49:13,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:13,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:13,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:13,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:13,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:13,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:13" (1/1) ... [2021-11-07 01:49:13,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626e8622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:13, skipping insertion in model container [2021-11-07 01:49:13,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:13" (1/1) ... [2021-11-07 01:49:13,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:13,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:14,342 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-07 01:49:14,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:14,358 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:49:14,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e478f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:14, skipping insertion in model container [2021-11-07 01:49:14,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:14,359 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:49:14,361 INFO L168 Benchmark]: Toolchain (without parser) took 926.74 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 86.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:14,362 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 45.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:49:14,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 920.16 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 86.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:14,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 45.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 920.16 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 86.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3167]: 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:16,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:16,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:16,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:16,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:16,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:16,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:16,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:16,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:16,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:16,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:16,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:16,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:16,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:16,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:16,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:16,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:16,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:16,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:16,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:16,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:16,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:16,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:16,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:16,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:16,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:16,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:16,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:16,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:16,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:16,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:16,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:16,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:16,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:16,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:16,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:16,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:16,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:16,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:16,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:16,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:16,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:49:17,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:17,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:17,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:17,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:17,041 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:17,042 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:17,042 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:17,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:17,042 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:17,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:17,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:49:17,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:49:17,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:17,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:17,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:17,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:17,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:17,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:49:17,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:49:17,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:49:17,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:17,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:17,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:17,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:17,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:49:17,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:17,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:17,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:17,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:17,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:17,051 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:49:17,051 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:17,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:17,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:17,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:17,053 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2021-11-07 01:49:17,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:17,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:17,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:17,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:17,444 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:17,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-07 01:49:17,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/8cb28542d/87bc55d6784c4055b7bca5b4cb4dda55/FLAG42b7a9694 [2021-11-07 01:49:18,384 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:18,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-07 01:49:18,411 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/8cb28542d/87bc55d6784c4055b7bca5b4cb4dda55/FLAG42b7a9694 [2021-11-07 01:49:18,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/data/8cb28542d/87bc55d6784c4055b7bca5b4cb4dda55 [2021-11-07 01:49:18,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:18,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:18,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:18,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:18,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:18,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:18" (1/1) ... [2021-11-07 01:49:18,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdea522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:18, skipping insertion in model container [2021-11-07 01:49:18,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:18" (1/1) ... [2021-11-07 01:49:18,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:18,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:19,281 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-07 01:49:19,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,298 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:49:19,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:19,439 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-07 01:49:19,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:49:19,552 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_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-07 01:49:19,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,589 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:49:19,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19 WrapperNode [2021-11-07 01:49:19,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:19,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:19,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:49:19,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:49:19,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:19,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:20,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:49:20,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:49:20,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:49:20,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:21,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:21,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:21,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:22,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:22,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:22,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:49:22,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:49:22,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:49:22,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:49:22,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:22,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:49:22,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:49:23,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:49:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:49:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:49:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:49:23,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:50:00,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:50:00,066 INFO L299 CfgBuilder]: Removed 3937 assume(true) statements. [2021-11-07 01:50:00,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:00 BoogieIcfgContainer [2021-11-07 01:50:00,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:50:00,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:50:00,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:50:00,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:50:00,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:49:18" (1/3) ... [2021-11-07 01:50:00,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d535ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:00, skipping insertion in model container [2021-11-07 01:50:00,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (2/3) ... [2021-11-07 01:50:00,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d535ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:00, skipping insertion in model container [2021-11-07 01:50:00,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:00" (3/3) ... [2021-11-07 01:50:00,098 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2021-11-07 01:50:00,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:50:00,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:50:00,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:50:00,244 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:50:00,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:50:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 17343 states, 17332 states have (on average 1.8895684283406415) internal successors, (32750), 17342 states have internal predecessors, (32750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 01:50:00,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:00,714 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] [2021-11-07 01:50:00,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2039424680, now seen corresponding path program 1 times [2021-11-07 01:50:00,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:00,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761898835] [2021-11-07 01:50:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:00,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:00,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:00,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:00,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:50:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:01,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:50:01,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:01,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:01,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:01,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761898835] [2021-11-07 01:50:01,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761898835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:01,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:01,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:50:01,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667959892] [2021-11-07 01:50:01,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:01,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:01,631 INFO L87 Difference]: Start difference. First operand has 17343 states, 17332 states have (on average 1.8895684283406415) internal successors, (32750), 17342 states have internal predecessors, (32750), 0 states have call successors, (0), 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 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:08,993 INFO L93 Difference]: Finished difference Result 121023 states and 228531 transitions. [2021-11-07 01:50:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:50:08,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 01:50:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:09,751 INFO L225 Difference]: With dead ends: 121023 [2021-11-07 01:50:09,752 INFO L226 Difference]: Without dead ends: 103681 [2021-11-07 01:50:09,805 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:50:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103681 states. [2021-11-07 01:50:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103681 to 17355. [2021-11-07 01:50:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17355 states, 17345 states have (on average 1.887979244739118) internal successors, (32747), 17354 states have internal predecessors, (32747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17355 states to 17355 states and 32747 transitions. [2021-11-07 01:50:11,711 INFO L78 Accepts]: Start accepts. Automaton has 17355 states and 32747 transitions. Word has length 30 [2021-11-07 01:50:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:11,711 INFO L470 AbstractCegarLoop]: Abstraction has 17355 states and 32747 transitions. [2021-11-07 01:50:11,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 17355 states and 32747 transitions. [2021-11-07 01:50:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:50:11,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:11,716 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] [2021-11-07 01:50:11,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:11,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:11,930 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1718073598, now seen corresponding path program 1 times [2021-11-07 01:50:11,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:11,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216426329] [2021-11-07 01:50:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:11,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:11,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:11,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:50:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:12,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:50:12,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:12,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:12,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:12,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216426329] [2021-11-07 01:50:12,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216426329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:12,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:12,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:50:12,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840147504] [2021-11-07 01:50:12,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:50:12,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:50:12,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:12,564 INFO L87 Difference]: Start difference. First operand 17355 states and 32747 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:13,388 INFO L93 Difference]: Finished difference Result 34622 states and 65337 transitions. [2021-11-07 01:50:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:50:13,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-07 01:50:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:13,456 INFO L225 Difference]: With dead ends: 34622 [2021-11-07 01:50:13,456 INFO L226 Difference]: Without dead ends: 17281 [2021-11-07 01:50:13,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:13,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2021-11-07 01:50:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2021-11-07 01:50:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17281 states, 17271 states have (on average 1.887730878350993) internal successors, (32603), 17280 states have internal predecessors, (32603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32603 transitions. [2021-11-07 01:50:14,196 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32603 transitions. Word has length 32 [2021-11-07 01:50:14,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:14,197 INFO L470 AbstractCegarLoop]: Abstraction has 17281 states and 32603 transitions. [2021-11-07 01:50:14,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32603 transitions. [2021-11-07 01:50:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:50:14,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:14,212 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] [2021-11-07 01:50:14,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:14,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:14,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1807218912, now seen corresponding path program 1 times [2021-11-07 01:50:14,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:14,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011765157] [2021-11-07 01:50:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:14,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:14,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:14,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:14,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:50:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:14,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:50:14,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:14,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:15,096 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:15,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011765157] [2021-11-07 01:50:15,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011765157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:15,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:15,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:50:15,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415156] [2021-11-07 01:50:15,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:50:15,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:50:15,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:15,100 INFO L87 Difference]: Start difference. First operand 17281 states and 32603 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:16,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:16,549 INFO L93 Difference]: Finished difference Result 34536 states and 65169 transitions. [2021-11-07 01:50:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:50:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 34 [2021-11-07 01:50:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:16,604 INFO L225 Difference]: With dead ends: 34536 [2021-11-07 01:50:16,604 INFO L226 Difference]: Without dead ends: 17281 [2021-11-07 01:50:16,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:50:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2021-11-07 01:50:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 17281. [2021-11-07 01:50:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17281 states, 17271 states have (on average 1.8871518730820451) internal successors, (32593), 17280 states have internal predecessors, (32593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17281 states to 17281 states and 32593 transitions. [2021-11-07 01:50:17,472 INFO L78 Accepts]: Start accepts. Automaton has 17281 states and 32593 transitions. Word has length 34 [2021-11-07 01:50:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:17,473 INFO L470 AbstractCegarLoop]: Abstraction has 17281 states and 32593 transitions. [2021-11-07 01:50:17,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 17281 states and 32593 transitions. [2021-11-07 01:50:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:50:17,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:17,480 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] [2021-11-07 01:50:17,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:17,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:17,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:17,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:17,695 INFO L85 PathProgramCache]: Analyzing trace with hash 547790614, now seen corresponding path program 1 times [2021-11-07 01:50:17,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:17,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274980093] [2021-11-07 01:50:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:17,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:17,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:17,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:17,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:50:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:18,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:18,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:18,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:18,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:18,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274980093] [2021-11-07 01:50:18,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274980093] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:18,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:18,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:50:18,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537249455] [2021-11-07 01:50:18,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:50:18,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:50:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:18,538 INFO L87 Difference]: Start difference. First operand 17281 states and 32593 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:27,290 INFO L93 Difference]: Finished difference Result 76620 states and 144117 transitions. [2021-11-07 01:50:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:50:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 38 [2021-11-07 01:50:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:27,496 INFO L225 Difference]: With dead ends: 76620 [2021-11-07 01:50:27,497 INFO L226 Difference]: Without dead ends: 59409 [2021-11-07 01:50:27,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:50:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59409 states. [2021-11-07 01:50:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59409 to 30792. [2021-11-07 01:50:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30792 states, 30782 states have (on average 1.886719511402768) internal successors, (58077), 30791 states have internal predecessors, (58077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30792 states to 30792 states and 58077 transitions. [2021-11-07 01:50:29,387 INFO L78 Accepts]: Start accepts. Automaton has 30792 states and 58077 transitions. Word has length 38 [2021-11-07 01:50:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:29,388 INFO L470 AbstractCegarLoop]: Abstraction has 30792 states and 58077 transitions. [2021-11-07 01:50:29,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 30792 states and 58077 transitions. [2021-11-07 01:50:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:50:29,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:29,389 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] [2021-11-07 01:50:29,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:29,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:29,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -144923343, now seen corresponding path program 1 times [2021-11-07 01:50:29,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:29,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255870395] [2021-11-07 01:50:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:29,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:29,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:29,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:50:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:30,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:30,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:30,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:30,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:30,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255870395] [2021-11-07 01:50:30,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255870395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:30,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:30,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:50:30,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652813667] [2021-11-07 01:50:30,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:50:30,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:30,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:50:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:30,370 INFO L87 Difference]: Start difference. First operand 30792 states and 58077 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:44,354 INFO L93 Difference]: Finished difference Result 254969 states and 480970 transitions. [2021-11-07 01:50:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:50:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-07 01:50:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:45,333 INFO L225 Difference]: With dead ends: 254969 [2021-11-07 01:50:45,333 INFO L226 Difference]: Without dead ends: 224247 [2021-11-07 01:50:45,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:50:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224247 states. [2021-11-07 01:50:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224247 to 56867. [2021-11-07 01:50:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56867 states, 56857 states have (on average 1.8826705594737676) internal successors, (107043), 56866 states have internal predecessors, (107043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56867 states to 56867 states and 107043 transitions. [2021-11-07 01:50:49,000 INFO L78 Accepts]: Start accepts. Automaton has 56867 states and 107043 transitions. Word has length 38 [2021-11-07 01:50:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:49,003 INFO L470 AbstractCegarLoop]: Abstraction has 56867 states and 107043 transitions. [2021-11-07 01:50:49,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 56867 states and 107043 transitions. [2021-11-07 01:50:49,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:50:49,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:49,005 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] [2021-11-07 01:50:49,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:49,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:49,222 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:50:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 531478701, now seen corresponding path program 1 times [2021-11-07 01:50:49,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:49,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093733459] [2021-11-07 01:50:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:49,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:49,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:49,226 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:49,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6240f7-0f7e-435d-8c14-dc55ae0106d7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:50:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:49,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:50:49,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:49,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:49,966 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:49,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093733459] [2021-11-07 01:50:49,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093733459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:49,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:49,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:50:49,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913474024] [2021-11-07 01:50:49,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:50:49,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:50:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:49,969 INFO L87 Difference]: Start difference. First operand 56867 states and 107043 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:55,185 INFO L93 Difference]: Finished difference Result 169121 states and 318295 transitions. [2021-11-07 01:50:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:50:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 01:50:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:55,395 INFO L225 Difference]: With dead ends: 169121 [2021-11-07 01:50:55,395 INFO L226 Difference]: Without dead ends: 112286 [2021-11-07 01:50:55,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112286 states.