./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.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_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/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_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/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_a8f7d927-095e-4e99-ae0e-845622bbced1/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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:23:54,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:23:54,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:23:55,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:23:55,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:23:55,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:23:55,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:23:55,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:23:55,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:23:55,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:23:55,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:23:55,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:23:55,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:23:55,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:23:55,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:23:55,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:23:55,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:23:55,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:23:55,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:23:55,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:23:55,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:23:55,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:23:55,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:23:55,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:23:55,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:23:55,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:23:55,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:23:55,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:23:55,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:23:55,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:23:55,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:23:55,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:23:55,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:23:55,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:23:55,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:23:55,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:23:55,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:23:55,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:23:55,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:23:55,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:23:55,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:23:55,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:23:55,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:23:55,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:23:55,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:23:55,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:23:55,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:23:55,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:23:55,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:23:55,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:23:55,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:23:55,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:23:55,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:23:55,132 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:23:55,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:23:55,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:23:55,133 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:23:55,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:23:55,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:23:55,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:23:55,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:23:55,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:23:55,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:23:55,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:23:55,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:23:55,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:23:55,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:23:55,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:23:55,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:23:55,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:23:55,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:23:55,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:23:55,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:23:55,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:23:55,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:23:55,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:23:55,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:23:55,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:23:55,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:23:55,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:23:55,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:23:55,141 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_a8f7d927-095e-4e99-ae0e-845622bbced1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-11-07 02:23:55,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:23:55,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:23:55,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:23:55,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:23:55,458 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:23:55,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-07 02:23:55,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/040cffcd7/861ee8db946e44a2b850c24dbfddb909/FLAGa1b468507 [2021-11-07 02:23:56,346 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:23:56,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-07 02:23:56,379 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/040cffcd7/861ee8db946e44a2b850c24dbfddb909/FLAGa1b468507 [2021-11-07 02:23:56,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/040cffcd7/861ee8db946e44a2b850c24dbfddb909 [2021-11-07 02:23:56,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:23:56,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:23:56,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:56,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:23:56,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:23:56,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:56" (1/1) ... [2021-11-07 02:23:56,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afaa5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:56, skipping insertion in model container [2021-11-07 02:23:56,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:23:56" (1/1) ... [2021-11-07 02:23:56,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:23:56,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:23:57,308 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_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-07 02:23:57,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:23:57,327 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 02:23:57,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b602b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:23:57, skipping insertion in model container [2021-11-07 02:23:57,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:23:57,328 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:23:57,331 INFO L168 Benchmark]: Toolchain (without parser) took 802.14 ms. Allocated memory is still 119.5 MB. Free memory was 88.9 MB in the beginning and 61.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:57,332 INFO L168 Benchmark]: CDTParser took 1.12 ms. Allocated memory is still 81.8 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:23:57,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.88 ms. Allocated memory is still 119.5 MB. Free memory was 88.6 MB in the beginning and 61.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:23:57,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.12 ms. Allocated memory is still 81.8 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 797.88 ms. Allocated memory is still 119.5 MB. Free memory was 88.6 MB in the beginning and 61.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3106]: 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_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/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_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/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_a8f7d927-095e-4e99-ae0e-845622bbced1/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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:24:00,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:24:00,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:24:00,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:24:00,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:24:00,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:24:00,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:24:00,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:24:00,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:24:00,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:24:00,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:24:00,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:24:00,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:24:00,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:24:00,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:24:00,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:24:00,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:24:00,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:24:00,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:24:00,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:24:00,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:24:00,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:24:00,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:24:00,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:24:00,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:24:00,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:24:00,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:24:00,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:24:00,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:24:00,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:24:00,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:24:00,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:24:00,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:24:00,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:24:00,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:24:00,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:24:00,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:24:00,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:24:00,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:24:00,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:24:00,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:24:00,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:24:00,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:24:00,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:24:00,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:24:00,397 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:24:00,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:24:00,398 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:24:00,398 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:24:00,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:24:00,399 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:24:00,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:24:00,402 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:24:00,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:24:00,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:24:00,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:24:00,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:24:00,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:24:00,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:24:00,405 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:24:00,405 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:24:00,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:24:00,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:24:00,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:24:00,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:24:00,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:24:00,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:24:00,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:24:00,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:24:00,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:24:00,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:24:00,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:24:00,409 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:24:00,409 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:24:00,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:24:00,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:24:00,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:24:00,411 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_a8f7d927-095e-4e99-ae0e-845622bbced1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2021-11-07 02:24:00,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:24:00,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:24:00,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:24:00,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:24:00,951 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:24:00,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-07 02:24:01,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/0c910a91c/eb8bd513a2d74b4fb2e6d0d47a84f0ab/FLAGf04878d61 [2021-11-07 02:24:01,944 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:24:01,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2021-11-07 02:24:01,988 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/0c910a91c/eb8bd513a2d74b4fb2e6d0d47a84f0ab/FLAGf04878d61 [2021-11-07 02:24:02,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/data/0c910a91c/eb8bd513a2d74b4fb2e6d0d47a84f0ab [2021-11-07 02:24:02,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:24:02,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:24:02,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:02,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:24:02,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:24:02,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:02" (1/1) ... [2021-11-07 02:24:02,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da8614e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:02, skipping insertion in model container [2021-11-07 02:24:02,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:02" (1/1) ... [2021-11-07 02:24:02,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:24:02,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:24:02,961 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_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-07 02:24:02,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:02,981 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:24:03,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:24:03,163 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_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-07 02:24:03,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:03,180 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:24:03,363 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_a8f7d927-095e-4e99-ae0e-845622bbced1/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2021-11-07 02:24:03,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:24:03,411 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:24:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03 WrapperNode [2021-11-07 02:24:03,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:24:03,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:24:03,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:24:03,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:24:03,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:03,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:24:04,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:24:04,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:24:04,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:24:04,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:24:04,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:24:04,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:24:04,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:24:04,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (1/1) ... [2021-11-07 02:24:04,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:24:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:24:04,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:24:05,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:24:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:24:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:24:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:24:05,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:24:24,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:24:24,359 INFO L299 CfgBuilder]: Removed 1617 assume(true) statements. [2021-11-07 02:24:24,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:24 BoogieIcfgContainer [2021-11-07 02:24:24,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:24:24,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:24:24,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:24:24,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:24:24,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:02" (1/3) ... [2021-11-07 02:24:24,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:24, skipping insertion in model container [2021-11-07 02:24:24,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:03" (2/3) ... [2021-11-07 02:24:24,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffcac04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:24, skipping insertion in model container [2021-11-07 02:24:24,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:24" (3/3) ... [2021-11-07 02:24:24,381 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2021-11-07 02:24:24,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:24:24,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 02:24:24,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:24:24,489 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 02:24:24,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 02:24:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 6573 states, 6562 states have (on average 1.88128619323377) internal successors, (12345), 6572 states have internal predecessors, (12345), 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 02:24:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:24:24,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:24,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:24,664 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 02:24:24,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -416717237, now seen corresponding path program 1 times [2021-11-07 02:24:24,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:24,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965718118] [2021-11-07 02:24:24,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:24,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:24,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:24,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:24:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:24:25,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:25,483 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 02:24:25,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:25,704 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 02:24:25,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:25,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965718118] [2021-11-07 02:24:25,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965718118] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:25,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:25,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:24:25,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390799001] [2021-11-07 02:24:25,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:24:25,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:24:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:24:25,756 INFO L87 Difference]: Start difference. First operand has 6573 states, 6562 states have (on average 1.88128619323377) internal successors, (12345), 6572 states have internal predecessors, (12345), 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 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 02:24:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:29,387 INFO L93 Difference]: Finished difference Result 45633 states and 85696 transitions. [2021-11-07 02:24:29,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:24:29,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 47 [2021-11-07 02:24:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:29,697 INFO L225 Difference]: With dead ends: 45633 [2021-11-07 02:24:29,697 INFO L226 Difference]: Without dead ends: 39061 [2021-11-07 02:24:29,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 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 02:24:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39061 states. [2021-11-07 02:24:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39061 to 6585. [2021-11-07 02:24:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 6575 states have (on average 1.877110266159696) internal successors, (12342), 6584 states have internal predecessors, (12342), 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 02:24:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 12342 transitions. [2021-11-07 02:24:30,564 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 12342 transitions. Word has length 47 [2021-11-07 02:24:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:30,564 INFO L470 AbstractCegarLoop]: Abstraction has 6585 states and 12342 transitions. [2021-11-07 02:24:30,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 02:24:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 12342 transitions. [2021-11-07 02:24:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 02:24:30,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:30,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:30,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:30,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:30,788 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 02:24:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2125919563, now seen corresponding path program 1 times [2021-11-07 02:24:30,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:30,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732500271] [2021-11-07 02:24:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:30,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:30,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:30,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:24:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:31,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:31,434 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 02:24:31,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:31,631 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 02:24:31,631 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:31,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732500271] [2021-11-07 02:24:31,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732500271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:31,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:31,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:24:31,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115568175] [2021-11-07 02:24:31,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:24:31,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:24:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:24:31,637 INFO L87 Difference]: Start difference. First operand 6585 states and 12342 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:24:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:31,951 INFO L93 Difference]: Finished difference Result 13082 states and 24527 transitions. [2021-11-07 02:24:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:24:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-07 02:24:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:31,975 INFO L225 Difference]: With dead ends: 13082 [2021-11-07 02:24:31,975 INFO L226 Difference]: Without dead ends: 6511 [2021-11-07 02:24:31,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 02:24:32,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-11-07 02:24:32,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2021-11-07 02:24:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6501 states have (on average 1.8763267189663129) internal successors, (12198), 6510 states have internal predecessors, (12198), 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 02:24:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12198 transitions. [2021-11-07 02:24:32,225 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12198 transitions. Word has length 49 [2021-11-07 02:24:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:32,226 INFO L470 AbstractCegarLoop]: Abstraction has 6511 states and 12198 transitions. [2021-11-07 02:24:32,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 02:24:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12198 transitions. [2021-11-07 02:24:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:24:32,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:32,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:32,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:32,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:32,447 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 02:24:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1571718355, now seen corresponding path program 1 times [2021-11-07 02:24:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:32,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045312115] [2021-11-07 02:24:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:32,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:32,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:32,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:32,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:24:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:32,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:24:32,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:33,171 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 02:24:33,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:33,400 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 02:24:33,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:33,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045312115] [2021-11-07 02:24:33,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045312115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:33,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:33,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:24:33,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14676111] [2021-11-07 02:24:33,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:24:33,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:33,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:24:33,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:24:33,404 INFO L87 Difference]: Start difference. First operand 6511 states and 12198 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 02:24:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:34,065 INFO L93 Difference]: Finished difference Result 12996 states and 24359 transitions. [2021-11-07 02:24:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:24:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 02:24:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:34,087 INFO L225 Difference]: With dead ends: 12996 [2021-11-07 02:24:34,087 INFO L226 Difference]: Without dead ends: 6511 [2021-11-07 02:24:34,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 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 02:24:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-11-07 02:24:34,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 6511. [2021-11-07 02:24:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6501 states have (on average 1.874788494077834) internal successors, (12188), 6510 states have internal predecessors, (12188), 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 02:24:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 12188 transitions. [2021-11-07 02:24:34,381 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 12188 transitions. Word has length 51 [2021-11-07 02:24:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:34,382 INFO L470 AbstractCegarLoop]: Abstraction has 6511 states and 12188 transitions. [2021-11-07 02:24:34,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 02:24:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 12188 transitions. [2021-11-07 02:24:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:24:34,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:34,386 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:34,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:34,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:34,604 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 02:24:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1235228573, now seen corresponding path program 1 times [2021-11-07 02:24:34,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:34,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012158612] [2021-11-07 02:24:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:34,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:34,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:34,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:24:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:35,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:24:35,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:35,325 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 02:24:35,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:35,558 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 02:24:35,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:35,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012158612] [2021-11-07 02:24:35,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012158612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:35,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:35,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:24:35,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451832610] [2021-11-07 02:24:35,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:24:35,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:24:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:24:35,561 INFO L87 Difference]: Start difference. First operand 6511 states and 12188 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 02:24:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:44,162 INFO L93 Difference]: Finished difference Result 29184 states and 54221 transitions. [2021-11-07 02:24:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 02:24:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 55 [2021-11-07 02:24:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:44,245 INFO L225 Difference]: With dead ends: 29184 [2021-11-07 02:24:44,245 INFO L226 Difference]: Without dead ends: 22743 [2021-11-07 02:24:44,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 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 02:24:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22743 states. [2021-11-07 02:24:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22743 to 11455. [2021-11-07 02:24:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11455 states, 11445 states have (on average 1.874442988204456) internal successors, (21453), 11454 states have internal predecessors, (21453), 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 02:24:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11455 states to 11455 states and 21453 transitions. [2021-11-07 02:24:45,155 INFO L78 Accepts]: Start accepts. Automaton has 11455 states and 21453 transitions. Word has length 55 [2021-11-07 02:24:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:45,158 INFO L470 AbstractCegarLoop]: Abstraction has 11455 states and 21453 transitions. [2021-11-07 02:24:45,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 02:24:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 11455 states and 21453 transitions. [2021-11-07 02:24:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 02:24:45,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:45,163 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:45,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:45,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:45,382 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 02:24:45,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash 475638498, now seen corresponding path program 1 times [2021-11-07 02:24:45,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:45,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376657035] [2021-11-07 02:24:45,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:45,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:45,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:45,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:45,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:24:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:45,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:24:45,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:46,130 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 02:24:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:46,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:46,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376657035] [2021-11-07 02:24:46,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376657035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:46,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:46,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:24:46,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735966905] [2021-11-07 02:24:46,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:24:46,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:24:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:24:46,342 INFO L87 Difference]: Start difference. First operand 11455 states and 21453 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 02:24:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:51,696 INFO L93 Difference]: Finished difference Result 94992 states and 178046 transitions. [2021-11-07 02:24:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:24:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2021-11-07 02:24:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:51,973 INFO L225 Difference]: With dead ends: 94992 [2021-11-07 02:24:51,973 INFO L226 Difference]: Without dead ends: 83607 [2021-11-07 02:24:52,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 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 02:24:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83607 states. [2021-11-07 02:24:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83607 to 21467. [2021-11-07 02:24:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21467 states, 21457 states have (on average 1.8737008901523977) internal successors, (40204), 21466 states have internal predecessors, (40204), 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 02:24:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21467 states to 21467 states and 40204 transitions. [2021-11-07 02:24:54,116 INFO L78 Accepts]: Start accepts. Automaton has 21467 states and 40204 transitions. Word has length 55 [2021-11-07 02:24:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:54,117 INFO L470 AbstractCegarLoop]: Abstraction has 21467 states and 40204 transitions. [2021-11-07 02:24:54,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 02:24:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21467 states and 40204 transitions. [2021-11-07 02:24:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 02:24:54,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:54,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:54,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:54,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:54,336 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 02:24:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1969586458, now seen corresponding path program 1 times [2021-11-07 02:24:54,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:54,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447936921] [2021-11-07 02:24:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:54,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:54,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:54,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:24:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:54,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:24:54,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:55,003 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 02:24:55,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:55,353 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 02:24:55,354 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:55,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447936921] [2021-11-07 02:24:55,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447936921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:55,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:55,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:24:55,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479379285] [2021-11-07 02:24:55,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:24:55,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:24:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:24:55,357 INFO L87 Difference]: Start difference. First operand 21467 states and 40204 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 02:24:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:57,584 INFO L93 Difference]: Finished difference Result 63401 states and 118738 transitions. [2021-11-07 02:24:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:24:57,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-07 02:24:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:57,691 INFO L225 Difference]: With dead ends: 63401 [2021-11-07 02:24:57,691 INFO L226 Difference]: Without dead ends: 41966 [2021-11-07 02:24:57,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 02:24:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41966 states. [2021-11-07 02:24:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41966 to 21343. [2021-11-07 02:24:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21343 states, 21333 states have (on average 1.8729667651057047) internal successors, (39956), 21342 states have internal predecessors, (39956), 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 02:24:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21343 states to 21343 states and 39956 transitions. [2021-11-07 02:24:59,197 INFO L78 Accepts]: Start accepts. Automaton has 21343 states and 39956 transitions. Word has length 56 [2021-11-07 02:24:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 21343 states and 39956 transitions. [2021-11-07 02:24:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 02:24:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 21343 states and 39956 transitions. [2021-11-07 02:24:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 02:24:59,200 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:59,201 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:59,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:59,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:59,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:24:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1697296617, now seen corresponding path program 1 times [2021-11-07 02:24:59,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:59,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032561824] [2021-11-07 02:24:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:59,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:59,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:59,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:59,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:24:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:59,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:24:59,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:00,112 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 02:25:00,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:00,450 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 02:25:00,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:00,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032561824] [2021-11-07 02:25:00,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032561824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:00,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:00,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:25:00,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823863595] [2021-11-07 02:25:00,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:25:00,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:25:00,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:25:00,452 INFO L87 Difference]: Start difference. First operand 21343 states and 39956 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 02:25:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:12,305 INFO L93 Difference]: Finished difference Result 81091 states and 151377 transitions. [2021-11-07 02:25:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 02:25:12,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 56 [2021-11-07 02:25:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:12,457 INFO L225 Difference]: With dead ends: 81091 [2021-11-07 02:25:12,457 INFO L226 Difference]: Without dead ends: 59782 [2021-11-07 02:25:12,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:25:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59782 states. [2021-11-07 02:25:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59782 to 41667. [2021-11-07 02:25:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41667 states, 41657 states have (on average 1.85613462323259) internal successors, (77321), 41666 states have internal predecessors, (77321), 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 02:25:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41667 states to 41667 states and 77321 transitions. [2021-11-07 02:25:14,698 INFO L78 Accepts]: Start accepts. Automaton has 41667 states and 77321 transitions. Word has length 56 [2021-11-07 02:25:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:14,699 INFO L470 AbstractCegarLoop]: Abstraction has 41667 states and 77321 transitions. [2021-11-07 02:25:14,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 02:25:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 41667 states and 77321 transitions. [2021-11-07 02:25:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:25:14,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:14,702 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:25:14,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:14,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:14,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:25:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:14,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1409951242, now seen corresponding path program 1 times [2021-11-07 02:25:14,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:14,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091169170] [2021-11-07 02:25:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:14,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:14,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:14,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:14,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:25:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:15,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:25:15,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:15,653 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 02:25:15,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:15,989 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 02:25:15,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:15,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091169170] [2021-11-07 02:25:15,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091169170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:15,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:15,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:25:15,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204516265] [2021-11-07 02:25:15,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:25:15,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:25:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:25:15,993 INFO L87 Difference]: Start difference. First operand 41667 states and 77321 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:25:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:21,501 INFO L93 Difference]: Finished difference Result 163302 states and 303107 transitions. [2021-11-07 02:25:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:25:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 59 [2021-11-07 02:25:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:21,783 INFO L225 Difference]: With dead ends: 163302 [2021-11-07 02:25:21,783 INFO L226 Difference]: Without dead ends: 121672 [2021-11-07 02:25:21,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 02:25:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121672 states. [2021-11-07 02:25:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121672 to 41553. [2021-11-07 02:25:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41553 states, 41543 states have (on average 1.850877404135474) internal successors, (76891), 41552 states have internal predecessors, (76891), 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 02:25:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41553 states to 41553 states and 76891 transitions. [2021-11-07 02:25:24,421 INFO L78 Accepts]: Start accepts. Automaton has 41553 states and 76891 transitions. Word has length 59 [2021-11-07 02:25:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:24,422 INFO L470 AbstractCegarLoop]: Abstraction has 41553 states and 76891 transitions. [2021-11-07 02:25:24,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 02:25:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41553 states and 76891 transitions. [2021-11-07 02:25:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:25:24,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:24,425 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:25:24,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:24,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:24,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 02:25:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash 939150757, now seen corresponding path program 1 times [2021-11-07 02:25:24,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:24,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64807830] [2021-11-07 02:25:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:24,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:24,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:24,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:24,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8f7d927-095e-4e99-ae0e-845622bbced1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:25:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:25,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:25:25,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:25,518 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 02:25:25,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:25,709 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 02:25:25,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:25,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64807830] [2021-11-07 02:25:25,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64807830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:25,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:25,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:25:25,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814236803] [2021-11-07 02:25:25,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:25:25,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:25:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:25:25,714 INFO L87 Difference]: Start difference. First operand 41553 states and 76891 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 02:25:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:39,882 INFO L93 Difference]: Finished difference Result 345822 states and 642074 transitions. [2021-11-07 02:25:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:25:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-07 02:25:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:40,881 INFO L225 Difference]: With dead ends: 345822 [2021-11-07 02:25:40,881 INFO L226 Difference]: Without dead ends: 304325 [2021-11-07 02:25:40,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72