./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.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_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/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_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/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_d036c04c-55c1-4485-ad2d-0e969da8b53e/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:46,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:46,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:46,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:46,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:46,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:46,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:46,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:46,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:46,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:46,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:46,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:46,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:46,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:46,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:46,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:46,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:46,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:46,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:46,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:46,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:46,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:46,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:46,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:46,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:46,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:46,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:46,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:46,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:46,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:46,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:46,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:46,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:46,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:46,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:46,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:46,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:46,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:46,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:46,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:46,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:46,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:11:47,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:47,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:47,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:47,041 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:47,041 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:47,041 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:47,041 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:11:47,042 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:47,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:47,042 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:11:47,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:11:47,052 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:47,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:11:47,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:11:47,053 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:11:47,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:47,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:47,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:11:47,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:47,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:47,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:47,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:47,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:47,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:47,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:47,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:47,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:47,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:47,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:47,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:47,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:47,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:47,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:47,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:47,059 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:11:47,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:11:47,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:47,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:47,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:47,061 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-07 01:11:47,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:47,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:47,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:47,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:47,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:47,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-07 01:11:47,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/a129b8f47/2b3f7734d49143c3b78469f8c9ba805a/FLAGdb708dd84 [2021-11-07 01:11:48,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:48,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-07 01:11:48,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/a129b8f47/2b3f7734d49143c3b78469f8c9ba805a/FLAGdb708dd84 [2021-11-07 01:11:48,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/a129b8f47/2b3f7734d49143c3b78469f8c9ba805a [2021-11-07 01:11:48,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:48,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:48,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:48,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:48,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:48,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:48" (1/1) ... [2021-11-07 01:11:48,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c898ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:48, skipping insertion in model container [2021-11-07 01:11:48,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:48" (1/1) ... [2021-11-07 01:11:48,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:48,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:49,566 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-07 01:11:49,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:49,597 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:11:49,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b0a6ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:49, skipping insertion in model container [2021-11-07 01:11:49,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:49,599 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:11:49,602 INFO L168 Benchmark]: Toolchain (without parser) took 1101.35 ms. Allocated memory is still 130.0 MB. Free memory was 90.2 MB in the beginning and 89.6 MB in the end (delta: 584.5 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:49,604 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 101.1 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:11:49,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1094.98 ms. Allocated memory is still 130.0 MB. Free memory was 90.0 MB in the beginning and 89.6 MB in the end (delta: 370.9 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:11:49,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 130.0 MB. Free memory was 101.1 MB in the beginning and 101.1 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1094.98 ms. Allocated memory is still 130.0 MB. Free memory was 90.0 MB in the beginning and 89.6 MB in the end (delta: 370.9 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 492]: 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/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_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/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_d036c04c-55c1-4485-ad2d-0e969da8b53e/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 fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:11:52,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:11:52,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:11:52,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:11:52,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:11:52,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:11:52,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:11:52,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:11:52,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:11:52,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:11:52,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:11:52,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:11:52,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:11:52,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:11:52,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:11:52,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:11:52,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:11:52,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:11:52,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:11:52,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:11:52,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:11:52,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:11:52,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:11:52,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:11:52,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:11:52,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:11:52,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:11:52,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:11:52,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:11:52,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:11:52,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:11:52,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:11:52,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:11:52,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:11:52,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:11:52,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:11:52,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:11:52,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:11:52,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:11:52,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:11:52,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:11:52,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:11:52,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:11:52,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:11:52,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:11:52,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:11:52,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:11:52,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:11:52,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:11:52,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:11:52,705 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:11:52,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:11:52,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:11:52,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:11:52,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:11:52,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:11:52,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:11:52,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:11:52,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:11:52,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:11:52,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:11:52,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:11:52,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:11:52,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:11:52,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:11:52,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:11:52,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:11:52,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:11:52,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:11:52,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:11:52,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:11:52,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:11:52,715 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:11:52,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:11:52,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:11:52,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:11:52,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:11:52,716 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdf21b24c583a6d136f11a4b24a73548bc1166a9ff6f145f509a3c93fdab8434 [2021-11-07 01:11:53,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:11:53,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:11:53,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:11:53,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:11:53,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:11:53,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-07 01:11:53,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/3e96c0164/15eb4f4b36814e4ba92f71d402fb66d9/FLAG62e5ca1d2 [2021-11-07 01:11:54,289 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:11:54,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c [2021-11-07 01:11:54,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/3e96c0164/15eb4f4b36814e4ba92f71d402fb66d9/FLAG62e5ca1d2 [2021-11-07 01:11:54,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/data/3e96c0164/15eb4f4b36814e4ba92f71d402fb66d9 [2021-11-07 01:11:54,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:11:54,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:11:54,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:54,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:11:54,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:11:54,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:54" (1/1) ... [2021-11-07 01:11:54,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:54, skipping insertion in model container [2021-11-07 01:11:54,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:11:54" (1/1) ... [2021-11-07 01:11:54,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:11:54,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:55,376 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-07 01:11:55,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:55,398 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:11:55,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:11:55,626 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-07 01:11:55,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:55,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:11:55,754 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_d036c04c-55c1-4485-ad2d-0e969da8b53e/sv-benchmarks/c/product-lines/email_spec8_productSimulator.cil.c[73270,73283] [2021-11-07 01:11:55,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:11:55,865 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:11:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55 WrapperNode [2021-11-07 01:11:55,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:11:55,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:11:55,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:11:55,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:11:55,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:11:55,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:03,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:12:03,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:12:03,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:12:03,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:12:03,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:03,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:04,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:04,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:06,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:06,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:07,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:09,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:12:09,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:12:09,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:12:09,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:12:09,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (1/1) ... [2021-11-07 01:12:09,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:09,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:12:09,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:12:09,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 01:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:12:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:12:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:30,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:30,116 INFO L299 CfgBuilder]: Removed 35931 assume(true) statements. [2021-11-07 01:13:30,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:30 BoogieIcfgContainer [2021-11-07 01:13:30,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:30,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:30,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:30,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:30,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:11:54" (1/3) ... [2021-11-07 01:13:30,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c026e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:30, skipping insertion in model container [2021-11-07 01:13:30,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:11:55" (2/3) ... [2021-11-07 01:13:30,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c026e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:30, skipping insertion in model container [2021-11-07 01:13:30,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:30" (3/3) ... [2021-11-07 01:13:30,172 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_productSimulator.cil.c [2021-11-07 01:13:30,179 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:30,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-07 01:13:30,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:30,413 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:13:30,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-07 01:13:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 34804 states, 34771 states have (on average 1.6085531045986599) internal successors, (55931), 34803 states have internal predecessors, (55931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:13:31,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:31,077 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] [2021-11-07 01:13:31,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:31,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1697074719, now seen corresponding path program 1 times [2021-11-07 01:13:31,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:31,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276101404] [2021-11-07 01:13:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:31,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:31,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:31,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:13:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:31,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:13:31,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:31,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:32,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:32,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276101404] [2021-11-07 01:13:32,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276101404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:32,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:32,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:13:32,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872264819] [2021-11-07 01:13:32,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:13:32,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:13:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:13:32,233 INFO L87 Difference]: Start difference. First operand has 34804 states, 34771 states have (on average 1.6085531045986599) internal successors, (55931), 34803 states have internal predecessors, (55931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:34,118 INFO L93 Difference]: Finished difference Result 69273 states and 111250 transitions. [2021-11-07 01:13:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:13:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:13:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:34,361 INFO L225 Difference]: With dead ends: 69273 [2021-11-07 01:13:34,362 INFO L226 Difference]: Without dead ends: 22248 [2021-11-07 01:13:34,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:13:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22248 states. [2021-11-07 01:13:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22248 to 22248. [2021-11-07 01:13:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22248 states, 22216 states have (on average 1.610010803024847) internal successors, (35768), 22247 states have internal predecessors, (35768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22248 states to 22248 states and 35768 transitions. [2021-11-07 01:13:35,535 INFO L78 Accepts]: Start accepts. Automaton has 22248 states and 35768 transitions. Word has length 46 [2021-11-07 01:13:35,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:35,537 INFO L470 AbstractCegarLoop]: Abstraction has 22248 states and 35768 transitions. [2021-11-07 01:13:35,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 22248 states and 35768 transitions. [2021-11-07 01:13:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 01:13:35,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:35,551 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 01:13:35,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:35,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:35,770 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash -318394746, now seen corresponding path program 1 times [2021-11-07 01:13:35,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:35,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221050704] [2021-11-07 01:13:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:35,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:35,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:35,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:35,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:13:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:36,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:13:36,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:36,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:36,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:36,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221050704] [2021-11-07 01:13:36,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221050704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:36,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:36,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:13:36,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639580945] [2021-11-07 01:13:36,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:13:36,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:13:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:13:36,834 INFO L87 Difference]: Start difference. First operand 22248 states and 35768 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:38,524 INFO L93 Difference]: Finished difference Result 44471 states and 71498 transitions. [2021-11-07 01:13:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:13:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-07 01:13:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:38,651 INFO L225 Difference]: With dead ends: 44471 [2021-11-07 01:13:38,651 INFO L226 Difference]: Without dead ends: 22248 [2021-11-07 01:13:38,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:13:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22248 states. [2021-11-07 01:13:39,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22248 to 22248. [2021-11-07 01:13:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22248 states, 22216 states have (on average 1.609695714800144) internal successors, (35761), 22247 states have internal predecessors, (35761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22248 states to 22248 states and 35761 transitions. [2021-11-07 01:13:39,470 INFO L78 Accepts]: Start accepts. Automaton has 22248 states and 35761 transitions. Word has length 47 [2021-11-07 01:13:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:39,473 INFO L470 AbstractCegarLoop]: Abstraction has 22248 states and 35761 transitions. [2021-11-07 01:13:39,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22248 states and 35761 transitions. [2021-11-07 01:13:39,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:13:39,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:39,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:39,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:39,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:39,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:39,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1620115276, now seen corresponding path program 1 times [2021-11-07 01:13:39,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:39,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600308721] [2021-11-07 01:13:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:39,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:39,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:39,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:39,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:13:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:40,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:40,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:40,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:40,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:40,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600308721] [2021-11-07 01:13:40,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600308721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:40,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:40,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:13:40,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030835878] [2021-11-07 01:13:40,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:40,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:40,944 INFO L87 Difference]: Start difference. First operand 22248 states and 35761 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:45,147 INFO L93 Difference]: Finished difference Result 30738 states and 49757 transitions. [2021-11-07 01:13:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:13:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:45,179 INFO L225 Difference]: With dead ends: 30738 [2021-11-07 01:13:45,179 INFO L226 Difference]: Without dead ends: 8504 [2021-11-07 01:13:45,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8504 states. [2021-11-07 01:13:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8504 to 8504. [2021-11-07 01:13:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8504 states, 8488 states have (on average 1.6085061262959472) internal successors, (13653), 8503 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8504 states to 8504 states and 13653 transitions. [2021-11-07 01:13:45,554 INFO L78 Accepts]: Start accepts. Automaton has 8504 states and 13653 transitions. Word has length 52 [2021-11-07 01:13:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:45,554 INFO L470 AbstractCegarLoop]: Abstraction has 8504 states and 13653 transitions. [2021-11-07 01:13:45,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8504 states and 13653 transitions. [2021-11-07 01:13:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:13:45,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:45,560 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, 1] [2021-11-07 01:13:45,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:45,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:45,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1260272636, now seen corresponding path program 1 times [2021-11-07 01:13:45,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:45,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642704108] [2021-11-07 01:13:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:45,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:45,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:45,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:13:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:46,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:46,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:46,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:46,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642704108] [2021-11-07 01:13:46,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642704108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:46,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:46,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:13:46,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675611181] [2021-11-07 01:13:46,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:46,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:46,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:46,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:46,898 INFO L87 Difference]: Start difference. First operand 8504 states and 13653 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 01:13:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:49,286 INFO L93 Difference]: Finished difference Result 13442 states and 21669 transitions. [2021-11-07 01:13:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 61 [2021-11-07 01:13:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:49,303 INFO L225 Difference]: With dead ends: 13442 [2021-11-07 01:13:49,304 INFO L226 Difference]: Without dead ends: 4954 [2021-11-07 01:13:49,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2021-11-07 01:13:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 4954. [2021-11-07 01:13:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 4938 states have (on average 1.6245443499392467) internal successors, (8022), 4953 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 8022 transitions. [2021-11-07 01:13:49,623 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 8022 transitions. Word has length 61 [2021-11-07 01:13:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:49,623 INFO L470 AbstractCegarLoop]: Abstraction has 4954 states and 8022 transitions. [2021-11-07 01:13:49,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 01:13:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 8022 transitions. [2021-11-07 01:13:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:13:49,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:49,627 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, 1, 1] [2021-11-07 01:13:49,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:49,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:49,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -13876731, now seen corresponding path program 1 times [2021-11-07 01:13:49,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:49,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848208273] [2021-11-07 01:13:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:49,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:49,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:49,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:13:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:13:50,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:50,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:50,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:50,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848208273] [2021-11-07 01:13:50,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848208273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:50,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:50,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:13:50,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813548506] [2021-11-07 01:13:50,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:13:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:13:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:50,990 INFO L87 Difference]: Start difference. First operand 4954 states and 8022 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:53,337 INFO L93 Difference]: Finished difference Result 9863 states and 15980 transitions. [2021-11-07 01:13:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:13:53,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-07 01:13:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:53,354 INFO L225 Difference]: With dead ends: 9863 [2021-11-07 01:13:53,354 INFO L226 Difference]: Without dead ends: 4945 [2021-11-07 01:13:53,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:13:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2021-11-07 01:13:53,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4945. [2021-11-07 01:13:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 4929 states have (on average 1.62162710488943) internal successors, (7993), 4944 states have internal predecessors, (7993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 7993 transitions. [2021-11-07 01:13:53,601 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 7993 transitions. Word has length 62 [2021-11-07 01:13:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:53,603 INFO L470 AbstractCegarLoop]: Abstraction has 4945 states and 7993 transitions. [2021-11-07 01:13:53,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 7993 transitions. [2021-11-07 01:13:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:13:53,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:53,607 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:53,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 01:13:53,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:53,828 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:53,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash -840846622, now seen corresponding path program 1 times [2021-11-07 01:13:53,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:53,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004468136] [2021-11-07 01:13:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:53,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:53,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:53,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:13:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:54,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:13:54,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:54,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:55,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:55,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004468136] [2021-11-07 01:13:55,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004468136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:55,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:55,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:13:55,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613796088] [2021-11-07 01:13:55,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:13:55,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:13:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:13:55,101 INFO L87 Difference]: Start difference. First operand 4945 states and 7993 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:56,537 INFO L93 Difference]: Finished difference Result 19651 states and 31801 transitions. [2021-11-07 01:13:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:13:56,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 68 [2021-11-07 01:13:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:56,593 INFO L225 Difference]: With dead ends: 19651 [2021-11-07 01:13:56,593 INFO L226 Difference]: Without dead ends: 14746 [2021-11-07 01:13:56,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:13:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2021-11-07 01:13:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 4944. [2021-11-07 01:13:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4928 states have (on average 1.6211444805194806) internal successors, (7989), 4943 states have internal predecessors, (7989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7989 transitions. [2021-11-07 01:13:57,068 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7989 transitions. Word has length 68 [2021-11-07 01:13:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:57,069 INFO L470 AbstractCegarLoop]: Abstraction has 4944 states and 7989 transitions. [2021-11-07 01:13:57,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7989 transitions. [2021-11-07 01:13:57,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:13:57,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:57,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:57,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:57,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:57,293 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:13:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1499722729, now seen corresponding path program 1 times [2021-11-07 01:13:57,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:57,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13365722] [2021-11-07 01:13:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:57,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:57,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:57,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:13:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:13:58,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:58,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:58,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:58,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13365722] [2021-11-07 01:13:58,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13365722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:58,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:58,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:13:58,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095844164] [2021-11-07 01:13:58,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:13:58,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:13:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:13:58,657 INFO L87 Difference]: Start difference. First operand 4944 states and 7989 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 01:14:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:00,498 INFO L93 Difference]: Finished difference Result 19618 states and 31732 transitions. [2021-11-07 01:14:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:14:00,499 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 69 [2021-11-07 01:14:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:00,553 INFO L225 Difference]: With dead ends: 19618 [2021-11-07 01:14:00,553 INFO L226 Difference]: Without dead ends: 14717 [2021-11-07 01:14:00,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:14:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14717 states. [2021-11-07 01:14:01,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14717 to 4943. [2021-11-07 01:14:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.6206616602394968) internal successors, (7985), 4942 states have internal predecessors, (7985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7985 transitions. [2021-11-07 01:14:01,061 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7985 transitions. Word has length 69 [2021-11-07 01:14:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:01,062 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7985 transitions. [2021-11-07 01:14:01,062 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 01:14:01,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7985 transitions. [2021-11-07 01:14:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:14:01,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:01,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:01,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:14:01,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:01,286 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1691186769, now seen corresponding path program 1 times [2021-11-07 01:14:01,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:01,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532577221] [2021-11-07 01:14:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:01,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:01,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:01,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:14:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:14:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:02,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:02,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:02,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532577221] [2021-11-07 01:14:02,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532577221] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:02,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:02,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:14:02,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897058264] [2021-11-07 01:14:02,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:02,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:14:02,573 INFO L87 Difference]: Start difference. First operand 4943 states and 7985 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:03,239 INFO L93 Difference]: Finished difference Result 9850 states and 15928 transitions. [2021-11-07 01:14:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:03,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 70 [2021-11-07 01:14:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:03,256 INFO L225 Difference]: With dead ends: 9850 [2021-11-07 01:14:03,256 INFO L226 Difference]: Without dead ends: 4955 [2021-11-07 01:14:03,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2021-11-07 01:14:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 4943. [2021-11-07 01:14:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.6200527704485488) internal successors, (7982), 4942 states have internal predecessors, (7982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7982 transitions. [2021-11-07 01:14:03,695 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7982 transitions. Word has length 70 [2021-11-07 01:14:03,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:03,696 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7982 transitions. [2021-11-07 01:14:03,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7982 transitions. [2021-11-07 01:14:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:14:03,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:03,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:03,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:03,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,914 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1220545578, now seen corresponding path program 1 times [2021-11-07 01:14:03,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:03,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117362287] [2021-11-07 01:14:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:03,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:14:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:14:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:04,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:05,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:05,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117362287] [2021-11-07 01:14:05,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117362287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:05,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:05,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:14:05,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394782609] [2021-11-07 01:14:05,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:14:05,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:14:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:14:05,141 INFO L87 Difference]: Start difference. First operand 4943 states and 7982 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:06,557 INFO L93 Difference]: Finished difference Result 19604 states and 31706 transitions. [2021-11-07 01:14:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:14:06,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 72 [2021-11-07 01:14:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:06,605 INFO L225 Difference]: With dead ends: 19604 [2021-11-07 01:14:06,606 INFO L226 Difference]: Without dead ends: 14713 [2021-11-07 01:14:06,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14713 states. [2021-11-07 01:14:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14713 to 4943. [2021-11-07 01:14:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4927 states have (on average 1.619443880657601) internal successors, (7979), 4942 states have internal predecessors, (7979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7979 transitions. [2021-11-07 01:14:07,183 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7979 transitions. Word has length 72 [2021-11-07 01:14:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:07,184 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 7979 transitions. [2021-11-07 01:14:07,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7979 transitions. [2021-11-07 01:14:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:14:07,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:07,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:07,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:07,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:07,406 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:07,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1832269061, now seen corresponding path program 1 times [2021-11-07 01:14:07,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:07,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002548972] [2021-11-07 01:14:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:07,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:07,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:07,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:07,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:14:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:08,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:08,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:08,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:08,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:08,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002548972] [2021-11-07 01:14:08,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002548972] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:08,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:08,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:08,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730756635] [2021-11-07 01:14:08,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:08,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:08,688 INFO L87 Difference]: Start difference. First operand 4943 states and 7979 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 01:14:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:09,472 INFO L93 Difference]: Finished difference Result 14453 states and 23321 transitions. [2021-11-07 01:14:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 74 [2021-11-07 01:14:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:09,504 INFO L225 Difference]: With dead ends: 14453 [2021-11-07 01:14:09,505 INFO L226 Difference]: Without dead ends: 9834 [2021-11-07 01:14:09,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2021-11-07 01:14:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 5215. [2021-11-07 01:14:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5199 states have (on average 1.6297364877861127) internal successors, (8473), 5214 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 8473 transitions. [2021-11-07 01:14:10,285 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 8473 transitions. Word has length 74 [2021-11-07 01:14:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:10,287 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 8473 transitions. [2021-11-07 01:14:10,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 01:14:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 8473 transitions. [2021-11-07 01:14:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:14:10,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:10,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:10,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:10,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:10,504 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1215757678, now seen corresponding path program 1 times [2021-11-07 01:14:10,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:10,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886711440] [2021-11-07 01:14:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:10,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:10,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:10,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:14:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:11,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:11,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:11,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:11,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886711440] [2021-11-07 01:14:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886711440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:11,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:11,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850160109] [2021-11-07 01:14:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:11,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:11,879 INFO L87 Difference]: Start difference. First operand 5215 states and 8473 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:12,578 INFO L93 Difference]: Finished difference Result 15157 states and 24602 transitions. [2021-11-07 01:14:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:14:12,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 86 [2021-11-07 01:14:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:12,605 INFO L225 Difference]: With dead ends: 15157 [2021-11-07 01:14:12,605 INFO L226 Difference]: Without dead ends: 10053 [2021-11-07 01:14:12,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10053 states. [2021-11-07 01:14:13,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 5434. [2021-11-07 01:14:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5418 states have (on average 1.6369509043927648) internal successors, (8869), 5433 states have internal predecessors, (8869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 8869 transitions. [2021-11-07 01:14:13,246 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 8869 transitions. Word has length 86 [2021-11-07 01:14:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:13,247 INFO L470 AbstractCegarLoop]: Abstraction has 5434 states and 8869 transitions. [2021-11-07 01:14:13,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 8869 transitions. [2021-11-07 01:14:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:14:13,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:13,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:13,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:13,478 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 998574031, now seen corresponding path program 1 times [2021-11-07 01:14:13,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:13,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73008096] [2021-11-07 01:14:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:13,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:13,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:13,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:14:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:14,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:14,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:14,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:14,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:14,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73008096] [2021-11-07 01:14:14,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73008096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:14,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:14,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:14,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828265891] [2021-11-07 01:14:14,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:14,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:14,994 INFO L87 Difference]: Start difference. First operand 5434 states and 8869 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:15,726 INFO L93 Difference]: Finished difference Result 15844 states and 25850 transitions. [2021-11-07 01:14:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:14:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-07 01:14:15,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:15,747 INFO L225 Difference]: With dead ends: 15844 [2021-11-07 01:14:15,747 INFO L226 Difference]: Without dead ends: 10530 [2021-11-07 01:14:15,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2021-11-07 01:14:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 5911. [2021-11-07 01:14:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5911 states, 5895 states have (on average 1.6512298558100085) internal successors, (9734), 5910 states have internal predecessors, (9734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5911 states to 5911 states and 9734 transitions. [2021-11-07 01:14:16,608 INFO L78 Accepts]: Start accepts. Automaton has 5911 states and 9734 transitions. Word has length 87 [2021-11-07 01:14:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 5911 states and 9734 transitions. [2021-11-07 01:14:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5911 states and 9734 transitions. [2021-11-07 01:14:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 01:14:16,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:16,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:16,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:16,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,829 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1329737850, now seen corresponding path program 1 times [2021-11-07 01:14:16,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:16,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427704315] [2021-11-07 01:14:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:16,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:16,833 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:16,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:14:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:17,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:17,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:18,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:18,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:18,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427704315] [2021-11-07 01:14:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427704315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:18,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:18,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:18,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751743695] [2021-11-07 01:14:18,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:18,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:18,415 INFO L87 Difference]: Start difference. First operand 5911 states and 9734 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:19,532 INFO L93 Difference]: Finished difference Result 17252 states and 28413 transitions. [2021-11-07 01:14:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:14:19,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-07 01:14:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:19,553 INFO L225 Difference]: With dead ends: 17252 [2021-11-07 01:14:19,553 INFO L226 Difference]: Without dead ends: 11470 [2021-11-07 01:14:19,567 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11470 states. [2021-11-07 01:14:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11470 to 6851. [2021-11-07 01:14:20,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6851 states, 6835 states have (on average 1.6741770299926848) internal successors, (11443), 6850 states have internal predecessors, (11443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6851 states to 6851 states and 11443 transitions. [2021-11-07 01:14:20,574 INFO L78 Accepts]: Start accepts. Automaton has 6851 states and 11443 transitions. Word has length 88 [2021-11-07 01:14:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:20,575 INFO L470 AbstractCegarLoop]: Abstraction has 6851 states and 11443 transitions. [2021-11-07 01:14:20,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6851 states and 11443 transitions. [2021-11-07 01:14:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:14:20,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:20,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:20,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 01:14:20,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:20,798 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash -145607464, now seen corresponding path program 1 times [2021-11-07 01:14:20,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:20,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803047075] [2021-11-07 01:14:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:20,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:20,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:20,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:20,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:14:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:21,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:21,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:22,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:22,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:22,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803047075] [2021-11-07 01:14:22,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803047075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:22,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:22,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:22,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127978286] [2021-11-07 01:14:22,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:22,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:22,471 INFO L87 Difference]: Start difference. First operand 6851 states and 11443 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:23,749 INFO L93 Difference]: Finished difference Result 19803 states and 33054 transitions. [2021-11-07 01:14:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:14:23,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-07 01:14:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:23,781 INFO L225 Difference]: With dead ends: 19803 [2021-11-07 01:14:23,781 INFO L226 Difference]: Without dead ends: 13116 [2021-11-07 01:14:23,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2021-11-07 01:14:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 8497. [2021-11-07 01:14:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8481 states have (on average 1.701686121919585) internal successors, (14432), 8496 states have internal predecessors, (14432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 14432 transitions. [2021-11-07 01:14:24,954 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 14432 transitions. Word has length 89 [2021-11-07 01:14:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:24,955 INFO L470 AbstractCegarLoop]: Abstraction has 8497 states and 14432 transitions. [2021-11-07 01:14:24,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 14432 transitions. [2021-11-07 01:14:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 01:14:24,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:24,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:24,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:25,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:25,178 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -141403523, now seen corresponding path program 1 times [2021-11-07 01:14:25,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:25,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456359854] [2021-11-07 01:14:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:25,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:25,182 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:25,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:14:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:26,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:26,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:26,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:26,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:26,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456359854] [2021-11-07 01:14:26,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456359854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:26,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:26,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:26,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649497976] [2021-11-07 01:14:26,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:26,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:26,843 INFO L87 Difference]: Start difference. First operand 8497 states and 14432 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:28,198 INFO L93 Difference]: Finished difference Result 24448 states and 41495 transitions. [2021-11-07 01:14:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:14:28,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-11-07 01:14:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:28,232 INFO L225 Difference]: With dead ends: 24448 [2021-11-07 01:14:28,232 INFO L226 Difference]: Without dead ends: 16150 [2021-11-07 01:14:28,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16150 states. [2021-11-07 01:14:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16150 to 11531. [2021-11-07 01:14:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11531 states, 11515 states have (on average 1.7313938341293964) internal successors, (19937), 11530 states have internal predecessors, (19937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 19937 transitions. [2021-11-07 01:14:29,371 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 19937 transitions. Word has length 90 [2021-11-07 01:14:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:29,371 INFO L470 AbstractCegarLoop]: Abstraction has 11531 states and 19937 transitions. [2021-11-07 01:14:29,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 19937 transitions. [2021-11-07 01:14:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 01:14:29,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:29,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:14:29,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:29,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:29,594 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-07 01:14:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash -832103133, now seen corresponding path program 1 times [2021-11-07 01:14:29,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:29,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449249152] [2021-11-07 01:14:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:29,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:29,599 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:29,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d036c04c-55c1-4485-ad2d-0e969da8b53e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:14:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:30,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:14:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:30,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:31,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:14:31,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:31,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449249152] [2021-11-07 01:14:31,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449249152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:31,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:31,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:14:31,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127178453] [2021-11-07 01:14:31,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:14:31,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:31,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:14:31,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:14:31,221 INFO L87 Difference]: Start difference. First operand 11531 states and 19937 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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)