./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs --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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:44:55,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:44:55,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:44:55,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:44:55,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:44:55,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:44:55,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:44:55,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:44:55,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:44:55,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:44:55,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:44:55,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:44:55,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:44:55,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:44:55,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:44:55,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:44:55,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:44:55,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:44:55,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:44:55,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:44:55,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:44:55,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:44:55,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:44:55,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:44:55,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:44:55,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:44:55,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:44:55,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:44:55,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:44:55,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:44:55,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:44:55,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:44:55,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:44:55,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:44:55,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:44:55,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:44:55,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:44:55,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:44:55,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:44:55,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:44:55,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:44:55,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:44:55,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:44:55,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:44:55,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:44:55,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:44:55,946 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:44:55,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:44:55,947 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:44:55,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:44:55,947 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:44:55,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:44:55,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:44:55,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:44:55,948 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:44:55,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:44:55,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:44:55,949 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:44:55,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:44:55,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:44:55,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:44:55,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:44:55,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:44:55,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:44:55,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:44:55,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:44:55,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:44:55,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:44:55,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:44:55,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:44:55,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:44:55,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:44:55,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:44:55,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:44:55,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:44:55,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:44:55,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:44:55,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:44:55,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:44:55,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:44:55,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:44:55,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:44:55,967 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-19 14:44:56,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:44:56,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:44:56,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:44:56,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:44:56,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:44:56,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-19 14:44:56,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/7408fe08a/b9f0fa3b687748a9aacdad07f13fbf89/FLAGd91e66a82 [2021-11-19 14:44:56,958 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:44:56,959 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-19 14:44:56,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/7408fe08a/b9f0fa3b687748a9aacdad07f13fbf89/FLAGd91e66a82 [2021-11-19 14:44:57,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/7408fe08a/b9f0fa3b687748a9aacdad07f13fbf89 [2021-11-19 14:44:57,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:44:57,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:44:57,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:57,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:44:57,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:44:57,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:57" (1/1) ... [2021-11-19 14:44:57,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f7ddf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:57, skipping insertion in model container [2021-11-19 14:44:57,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:44:57" (1/1) ... [2021-11-19 14:44:57,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:44:57,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:44:57,759 WARN L230 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-19 14:44:57,771 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:44:57,788 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) [2021-11-19 14:44:57,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43e344fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:44:57, skipping insertion in model container [2021-11-19 14:44:57,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:44:57,790 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:44:57,792 INFO L158 Benchmark]: Toolchain (without parser) took 604.54ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 66.6MB in the beginning and 96.6MB in the end (delta: -30.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:44:57,793 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:44:57,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.89ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 66.6MB in the beginning and 96.6MB in the end (delta: -30.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:44:57,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.89ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 66.6MB in the beginning and 96.6MB in the end (delta: -30.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs --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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:45:00,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:45:00,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:45:00,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:45:00,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:45:00,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:45:00,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:45:00,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:45:00,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:45:00,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:45:00,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:45:00,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:45:00,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:45:00,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:45:00,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:45:00,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:45:00,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:45:00,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:45:00,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:45:00,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:45:00,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:45:00,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:45:00,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:45:00,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:45:00,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:45:00,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:45:00,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:45:00,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:45:00,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:45:00,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:45:00,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:45:00,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:45:00,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:45:00,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:45:00,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:45:00,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:45:00,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:45:00,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:45:00,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:45:00,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:45:00,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:45:00,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:45:00,437 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:45:00,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:45:00,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:45:00,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:45:00,439 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:45:00,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:45:00,439 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:45:00,439 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:45:00,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:45:00,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:45:00,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:45:00,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:45:00,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:45:00,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:45:00,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:45:00,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:45:00,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:45:00,443 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:45:00,444 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:45:00,444 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:45:00,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:45:00,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:45:00,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:45:00,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:45:00,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:45:00,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:45:00,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:45:00,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:00,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:45:00,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:45:00,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:45:00,446 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:45:00,446 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:45:00,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:45:00,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:45:00,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:45:00,448 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-19 14:45:00,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:45:00,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:45:00,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:45:00,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:45:00,888 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:45:00,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-19 14:45:00,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/f834e9794/f1544516c345459fb1ad6cbfd412ace8/FLAG127974daa [2021-11-19 14:45:01,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:45:01,829 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-19 14:45:01,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/f834e9794/f1544516c345459fb1ad6cbfd412ace8/FLAG127974daa [2021-11-19 14:45:01,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/data/f834e9794/f1544516c345459fb1ad6cbfd412ace8 [2021-11-19 14:45:01,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:45:01,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:45:01,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:01,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:45:01,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:45:01,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:01" (1/1) ... [2021-11-19 14:45:01,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a4c882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:01, skipping insertion in model container [2021-11-19 14:45:01,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:45:01" (1/1) ... [2021-11-19 14:45:01,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:45:02,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:02,544 WARN L230 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-19 14:45:02,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:02,576 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:45:02,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:45:02,807 WARN L230 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-19 14:45:02,811 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:02,837 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:45:03,013 WARN L230 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_16a594f5-12cf-4134-be3f-f5c7b9bc7613/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-19 14:45:03,028 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:45:03,061 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:45:03,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03 WrapperNode [2021-11-19 14:45:03,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:45:03,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:03,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:45:03,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:45:03,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,216 INFO L137 Inliner]: procedures = 36, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 767 [2021-11-19 14:45:03,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:45:03,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:45:03,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:45:03,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:45:03,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:45:03,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:45:03,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:45:03,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:45:03,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (1/1) ... [2021-11-19 14:45:03,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:45:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:45:03,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:45:03,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:45:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:45:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:45:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:45:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:45:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:45:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:45:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:45:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:45:03,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:45:03,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:45:03,647 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:45:03,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:45:03,672 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 14:45:12,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-19 14:45:12,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-19 14:45:12,853 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:45:12,861 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:45:12,861 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:45:12,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:12 BoogieIcfgContainer [2021-11-19 14:45:12,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:45:12,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:45:12,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:45:12,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:45:12,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:45:01" (1/3) ... [2021-11-19 14:45:12,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48084275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:12, skipping insertion in model container [2021-11-19 14:45:12,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:45:03" (2/3) ... [2021-11-19 14:45:12,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48084275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:45:12, skipping insertion in model container [2021-11-19 14:45:12,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:45:12" (3/3) ... [2021-11-19 14:45:12,872 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2021-11-19 14:45:12,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:45:12,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:45:12,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:45:12,957 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 [2021-11-19 14:45:12,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:45:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 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) [2021-11-19 14:45:12,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 14:45:12,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:12,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:12,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2021-11-19 14:45:13,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:13,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010638040] [2021-11-19 14:45:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:13,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:13,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:13,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:45:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:13,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:13,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:13,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:13,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:13,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010638040] [2021-11-19 14:45:13,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010638040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:13,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:13,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:13,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126381269] [2021-11-19 14:45:13,885 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:13,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:13,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:13,927 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 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 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-19 14:45:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:14,207 INFO L93 Difference]: Finished difference Result 574 states and 984 transitions. [2021-11-19 14:45:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:14,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 14:45:14,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:14,229 INFO L225 Difference]: With dead ends: 574 [2021-11-19 14:45:14,230 INFO L226 Difference]: Without dead ends: 392 [2021-11-19 14:45:14,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:14,238 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 392 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:14,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 672 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:45:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-19 14:45:14,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-19 14:45:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5319693094629157) internal successors, (599), 391 states have internal predecessors, (599), 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) [2021-11-19 14:45:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 599 transitions. [2021-11-19 14:45:14,317 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 599 transitions. Word has length 44 [2021-11-19 14:45:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:14,318 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 599 transitions. [2021-11-19 14:45:14,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-11-19 14:45:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 599 transitions. [2021-11-19 14:45:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:45:14,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:14,326 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:14,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:14,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:14,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 85239560, now seen corresponding path program 1 times [2021-11-19 14:45:14,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:14,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298748160] [2021-11-19 14:45:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:14,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:14,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:14,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:14,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:45:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:14,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:14,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:15,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:15,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:15,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298748160] [2021-11-19 14:45:15,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298748160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:15,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:15,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:15,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741701710] [2021-11-19 14:45:15,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:15,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:15,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:15,733 INFO L87 Difference]: Start difference. First operand 392 states and 599 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2021-11-19 14:45:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:16,284 INFO L93 Difference]: Finished difference Result 897 states and 1389 transitions. [2021-11-19 14:45:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 104 [2021-11-19 14:45:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:16,291 INFO L225 Difference]: With dead ends: 897 [2021-11-19 14:45:16,292 INFO L226 Difference]: Without dead ends: 642 [2021-11-19 14:45:16,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:16,298 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 303 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:16,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 721 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:16,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-19 14:45:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-19 14:45:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5241809672386895) internal successors, (977), 641 states have internal predecessors, (977), 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) [2021-11-19 14:45:16,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 977 transitions. [2021-11-19 14:45:16,367 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 977 transitions. Word has length 104 [2021-11-19 14:45:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:16,368 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 977 transitions. [2021-11-19 14:45:16,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2021-11-19 14:45:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 977 transitions. [2021-11-19 14:45:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 14:45:16,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:16,385 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:16,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:16,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:16,604 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -19862405, now seen corresponding path program 1 times [2021-11-19 14:45:16,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:16,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226882259] [2021-11-19 14:45:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:16,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:16,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:45:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:16,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:45:17,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-19 14:45:18,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:18,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226882259] [2021-11-19 14:45:18,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226882259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:18,070 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:18,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:18,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255368498] [2021-11-19 14:45:18,071 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:18,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:18,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:18,073 INFO L87 Difference]: Start difference. First operand 642 states and 977 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-11-19 14:45:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:18,514 INFO L93 Difference]: Finished difference Result 1400 states and 2148 transitions. [2021-11-19 14:45:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:18,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2021-11-19 14:45:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:18,522 INFO L225 Difference]: With dead ends: 1400 [2021-11-19 14:45:18,522 INFO L226 Difference]: Without dead ends: 895 [2021-11-19 14:45:18,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:18,526 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 303 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:18,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 727 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:45:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-19 14:45:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-19 14:45:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.5190156599552573) internal successors, (1358), 894 states have internal predecessors, (1358), 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) [2021-11-19 14:45:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1358 transitions. [2021-11-19 14:45:18,564 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1358 transitions. Word has length 167 [2021-11-19 14:45:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:18,564 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1358 transitions. [2021-11-19 14:45:18,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-11-19 14:45:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1358 transitions. [2021-11-19 14:45:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-19 14:45:18,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:18,571 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:18,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:18,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:18,775 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926231, now seen corresponding path program 1 times [2021-11-19 14:45:18,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:18,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594210796] [2021-11-19 14:45:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:18,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:18,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:18,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:18,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:45:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:19,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:19,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:45:19,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:45:20,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:20,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594210796] [2021-11-19 14:45:20,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594210796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:20,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:20,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:20,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047551400] [2021-11-19 14:45:20,598 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:20,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:20,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:20,609 INFO L87 Difference]: Start difference. First operand 895 states and 1358 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-19 14:45:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:21,179 INFO L93 Difference]: Finished difference Result 1904 states and 2905 transitions. [2021-11-19 14:45:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 230 [2021-11-19 14:45:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:21,189 INFO L225 Difference]: With dead ends: 1904 [2021-11-19 14:45:21,189 INFO L226 Difference]: Without dead ends: 1146 [2021-11-19 14:45:21,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:21,192 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 311 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:21,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 725 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-19 14:45:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-11-19 14:45:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.514410480349345) internal successors, (1734), 1145 states have internal predecessors, (1734), 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) [2021-11-19 14:45:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1734 transitions. [2021-11-19 14:45:21,243 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1734 transitions. Word has length 230 [2021-11-19 14:45:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:21,244 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1734 transitions. [2021-11-19 14:45:21,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2021-11-19 14:45:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1734 transitions. [2021-11-19 14:45:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-19 14:45:21,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:21,252 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:21,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:21,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,471 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:21,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1007722868, now seen corresponding path program 1 times [2021-11-19 14:45:21,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:21,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320806080] [2021-11-19 14:45:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:21,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:21,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:21,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:21,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:45:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:21,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:21,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 14:45:22,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-19 14:45:23,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:23,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320806080] [2021-11-19 14:45:23,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320806080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:23,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:23,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:23,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66027327] [2021-11-19 14:45:23,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:23,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:23,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:23,412 INFO L87 Difference]: Start difference. First operand 1146 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-11-19 14:45:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:23,891 INFO L93 Difference]: Finished difference Result 2409 states and 3659 transitions. [2021-11-19 14:45:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:23,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 294 [2021-11-19 14:45:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:23,901 INFO L225 Difference]: With dead ends: 2409 [2021-11-19 14:45:23,901 INFO L226 Difference]: Without dead ends: 1400 [2021-11-19 14:45:23,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:23,906 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 315 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:23,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 728 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:45:23,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-19 14:45:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2021-11-19 14:45:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 1.5096497498213008) internal successors, (2112), 1399 states have internal predecessors, (2112), 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) [2021-11-19 14:45:23,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2112 transitions. [2021-11-19 14:45:23,972 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2112 transitions. Word has length 294 [2021-11-19 14:45:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:23,973 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2112 transitions. [2021-11-19 14:45:23,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-11-19 14:45:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2112 transitions. [2021-11-19 14:45:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-19 14:45:23,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:23,982 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:24,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:24,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:24,206 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1828138848, now seen corresponding path program 1 times [2021-11-19 14:45:24,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:24,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442537766] [2021-11-19 14:45:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:24,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:24,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:24,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:24,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:45:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:24,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:24,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-19 14:45:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-19 14:45:26,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:26,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442537766] [2021-11-19 14:45:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442537766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:26,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345046007] [2021-11-19 14:45:26,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:26,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:26,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:26,386 INFO L87 Difference]: Start difference. First operand 1400 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2021-11-19 14:45:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:26,913 INFO L93 Difference]: Finished difference Result 2914 states and 4408 transitions. [2021-11-19 14:45:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:45:26,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 358 [2021-11-19 14:45:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:26,924 INFO L225 Difference]: With dead ends: 2914 [2021-11-19 14:45:26,924 INFO L226 Difference]: Without dead ends: 1651 [2021-11-19 14:45:26,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:26,928 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 317 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:26,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 729 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:45:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-19 14:45:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-19 14:45:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5054545454545454) internal successors, (2484), 1650 states have internal predecessors, (2484), 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) [2021-11-19 14:45:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2484 transitions. [2021-11-19 14:45:27,007 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2484 transitions. Word has length 358 [2021-11-19 14:45:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:27,008 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2484 transitions. [2021-11-19 14:45:27,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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) [2021-11-19 14:45:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2484 transitions. [2021-11-19 14:45:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-19 14:45:27,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:27,019 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:27,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:27,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:27,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash -152438136, now seen corresponding path program 1 times [2021-11-19 14:45:27,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:27,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930515883] [2021-11-19 14:45:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:27,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:27,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:45:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:28,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:45:28,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:28,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:45:28,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-19 14:45:28,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:28,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:45:28,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-19 14:45:29,450 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-19 14:45:29,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 601 treesize of output 573 [2021-11-19 14:45:29,549 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 14:45:29,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 14:45:29,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:29,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-19 14:45:29,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:29,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-19 14:45:29,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-19 14:45:29,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-19 14:45:29,866 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-19 14:45:29,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 14:45:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:29,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-19 14:45:29,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-19 14:45:29,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-19 14:45:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-19 14:45:30,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:32,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-19 14:45:32,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-19 14:45:32,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-19 14:45:32,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-19 14:45:32,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-19 14:45:32,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-19 14:45:32,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-19 14:45:32,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:45:32,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-19 14:45:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-19 14:45:32,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:32,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930515883] [2021-11-19 14:45:32,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930515883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:32,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:32,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:45:32,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035257351] [2021-11-19 14:45:32,693 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:45:32,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:45:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:45:32,695 INFO L87 Difference]: Start difference. First operand 1651 states and 2484 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2021-11-19 14:45:34,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:36,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:39,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:43,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:47,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:48,067 INFO L93 Difference]: Finished difference Result 3299 states and 4964 transitions. [2021-11-19 14:45:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:45:48,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 392 [2021-11-19 14:45:48,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:48,078 INFO L225 Difference]: With dead ends: 3299 [2021-11-19 14:45:48,079 INFO L226 Difference]: Without dead ends: 1651 [2021-11-19 14:45:48,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:45:48,082 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:48,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 852 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 60 Unchecked, 15.2s Time] [2021-11-19 14:45:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-19 14:45:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-19 14:45:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5048484848484849) internal successors, (2483), 1650 states have internal predecessors, (2483), 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) [2021-11-19 14:45:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2483 transitions. [2021-11-19 14:45:48,142 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2483 transitions. Word has length 392 [2021-11-19 14:45:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2483 transitions. [2021-11-19 14:45:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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) [2021-11-19 14:45:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2483 transitions. [2021-11-19 14:45:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-19 14:45:48,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:48,149 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:48,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:48,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:48,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -924972090, now seen corresponding path program 1 times [2021-11-19 14:45:48,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:48,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142316348] [2021-11-19 14:45:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:48,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:48,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:48,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:48,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:45:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:50,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:45:50,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:50,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:50,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:50,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:50,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:50,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:45:50,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:50,244 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-19 14:45:50,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-19 14:45:50,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:50,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:50,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:45:50,654 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 14:45:50,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-19 14:45:52,093 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:45:52,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-19 14:45:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-19 14:45:52,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-19 14:45:53,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:53,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142316348] [2021-11-19 14:45:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142316348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:53,870 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:53,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 14:45:53,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718126106] [2021-11-19 14:45:53,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:53,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:45:53,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:53,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:45:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:53,873 INFO L87 Difference]: Start difference. First operand 1651 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2021-11-19 14:45:55,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:58,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:01,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:12,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:14,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:17,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:28,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:31,699 INFO L93 Difference]: Finished difference Result 6246 states and 9434 transitions. [2021-11-19 14:46:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:46:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 392 [2021-11-19 14:46:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:31,729 INFO L225 Difference]: With dead ends: 6246 [2021-11-19 14:46:31,730 INFO L226 Difference]: Without dead ends: 4605 [2021-11-19 14:46:31,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:31,734 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 396 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 88 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:31,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 836 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 718 Invalid, 3 Unknown, 0 Unchecked, 37.5s Time] [2021-11-19 14:46:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-19 14:46:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 1975. [2021-11-19 14:46:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5405268490374873) internal successors, (3041), 1974 states have internal predecessors, (3041), 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) [2021-11-19 14:46:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3041 transitions. [2021-11-19 14:46:31,892 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3041 transitions. Word has length 392 [2021-11-19 14:46:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:31,893 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3041 transitions. [2021-11-19 14:46:31,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2021-11-19 14:46:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3041 transitions. [2021-11-19 14:46:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-19 14:46:31,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:31,900 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:31,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:32,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:32,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1676639032, now seen corresponding path program 1 times [2021-11-19 14:46:32,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:32,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731260248] [2021-11-19 14:46:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:32,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:32,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:32,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:32,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:46:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:33,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:33,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:46:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:46:34,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:46:34,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:46:34,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:46:34,511 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-19 14:46:34,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-19 14:46:34,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:46:34,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:46:34,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:46:34,914 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-19 14:46:34,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-19 14:46:37,199 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:46:37,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-19 14:46:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-19 14:46:37,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-19 14:46:38,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:38,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731260248] [2021-11-19 14:46:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731260248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:38,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:38,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 14:46:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983081995] [2021-11-19 14:46:38,338 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:38,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:46:38,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:46:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:46:38,340 INFO L87 Difference]: Start difference. First operand 1975 states and 3041 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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) [2021-11-19 14:46:40,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:47,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:51,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:58,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:11,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:12,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:21,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:25,563 INFO L93 Difference]: Finished difference Result 8331 states and 12766 transitions. [2021-11-19 14:47:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:47:25,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 392 [2021-11-19 14:47:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:25,608 INFO L225 Difference]: With dead ends: 8331 [2021-11-19 14:47:25,609 INFO L226 Difference]: Without dead ends: 6366 [2021-11-19 14:47:25,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:47:25,613 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 359 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 86 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 889 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 779 Invalid, 2 Unknown, 0 Unchecked, 46.8s Time] [2021-11-19 14:47:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-11-19 14:47:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 2807. [2021-11-19 14:47:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.6190306486101211) internal successors, (4543), 2806 states have internal predecessors, (4543), 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) [2021-11-19 14:47:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4543 transitions. [2021-11-19 14:47:25,941 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4543 transitions. Word has length 392 [2021-11-19 14:47:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:25,942 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 4543 transitions. [2021-11-19 14:47:25,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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) [2021-11-19 14:47:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4543 transitions. [2021-11-19 14:47:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-19 14:47:25,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:25,956 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:26,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:26,177 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2021-11-19 14:47:26,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:26,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652656641] [2021-11-19 14:47:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:26,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:26,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:26,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a594f5-12cf-4134-be3f-f5c7b9bc7613/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:47:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:36,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-19 14:47:36,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:49:29,715 WARN L227 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:49:29,716 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-19 14:49:29,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 4169 treesize of output 4180 [2021-11-19 14:49:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4162 treesize of output 4126 [2021-11-19 14:49:29,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:49:29,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78488 [2021-11-19 14:49:29,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:49:29,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214863 [2021-11-19 14:49:29,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:49:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver