./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fed4ea6707efb0c46113b7defb1e72bb9bbe71f593886f20a58e457577f3a05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:58:46,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:58:46,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:58:46,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:58:46,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:58:46,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:58:46,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:58:46,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:58:46,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:58:46,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:58:46,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:58:46,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:58:46,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:58:46,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:58:46,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:58:46,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:58:46,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:58:46,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:58:46,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:58:46,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:58:46,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:58:46,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:58:46,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:58:46,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:58:46,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:58:46,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:58:46,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:58:46,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:58:46,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:58:46,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:58:46,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:58:46,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:58:46,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:58:46,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:58:46,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:58:46,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:58:46,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:58:46,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:58:46,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:58:46,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:58:46,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:58:46,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:58:46,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:58:46,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:58:46,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:58:46,339 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:58:46,340 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:58:46,340 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:58:46,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:58:46,341 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:58:46,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:58:46,342 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:58:46,343 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:58:46,344 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:58:46,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:58:46,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:58:46,345 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:58:46,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:58:46,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:58:46,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:58:46,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:58:46,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:58:46,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:58:46,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:58:46,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:58:46,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:58:46,349 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:58:46,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:58:46,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:58:46,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:58:46,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:58:46,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:58:46,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:58:46,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:58:46,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:58:46,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:58:46,355 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:58:46,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:58:46,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:58:46,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:58:46,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:58:46,357 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_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fed4ea6707efb0c46113b7defb1e72bb9bbe71f593886f20a58e457577f3a05 [2021-11-07 01:58:46,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:58:46,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:58:46,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:58:46,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:58:46,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:58:46,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c [2021-11-07 01:58:46,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/2a22a9795/17c8f2968a384cb39a47b1bda533b8f2/FLAGdde5ed7fe [2021-11-07 01:58:47,691 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:58:47,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c [2021-11-07 01:58:47,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/2a22a9795/17c8f2968a384cb39a47b1bda533b8f2/FLAGdde5ed7fe [2021-11-07 01:58:47,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/2a22a9795/17c8f2968a384cb39a47b1bda533b8f2 [2021-11-07 01:58:47,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:58:47,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:58:47,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:47,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:58:47,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:58:47,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:47" (1/1) ... [2021-11-07 01:58:47,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1301426f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:47, skipping insertion in model container [2021-11-07 01:58:47,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:47" (1/1) ... [2021-11-07 01:58:47,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:58:47,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:48,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2021-11-07 01:58:48,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:48,566 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:58:48,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62d0a965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48, skipping insertion in model container [2021-11-07 01:58:48,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:48,568 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:58:48,571 INFO L168 Benchmark]: Toolchain (without parser) took 736.83 ms. Allocated memory is still 98.6 MB. Free memory was 60.6 MB in the beginning and 65.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:58:48,572 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:58:48,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.37 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 65.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:58:48,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 727.37 ms. Allocated memory is still 98.6 MB. Free memory was 60.3 MB in the beginning and 65.8 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * 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_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fed4ea6707efb0c46113b7defb1e72bb9bbe71f593886f20a58e457577f3a05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:58:51,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:58:51,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:58:51,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:58:51,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:58:51,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:58:51,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:58:51,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:58:51,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:58:51,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:58:51,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:58:51,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:58:51,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:58:51,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:58:51,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:58:51,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:58:51,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:58:51,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:58:51,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:58:51,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:58:51,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:58:51,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:58:51,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:58:51,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:58:51,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:58:51,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:58:51,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:58:51,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:58:51,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:58:51,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:58:51,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:58:51,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:58:51,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:58:51,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:58:51,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:58:51,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:58:51,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:58:51,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:58:51,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:58:51,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:58:51,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:58:51,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:58:51,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:58:51,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:58:51,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:58:51,686 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:58:51,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:58:51,686 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:58:51,687 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:58:51,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:58:51,687 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:58:51,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:58:51,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:58:51,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:58:51,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:58:51,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:58:51,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:58:51,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:58:51,691 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:58:51,691 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:58:51,691 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:58:51,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:58:51,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:58:51,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:58:51,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:58:51,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:58:51,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:58:51,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:58:51,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:58:51,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:58:51,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:58:51,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:58:51,695 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:58:51,695 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:58:51,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:58:51,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:58:51,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:58:51,697 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_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fed4ea6707efb0c46113b7defb1e72bb9bbe71f593886f20a58e457577f3a05 [2021-11-07 01:58:52,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:58:52,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:58:52,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:58:52,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:58:52,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:58:52,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c [2021-11-07 01:58:52,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/441c0a21f/f70ba3d79684496eae47a6419b4d139c/FLAGe2cc3ac8c [2021-11-07 01:58:53,156 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:58:53,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c [2021-11-07 01:58:53,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/441c0a21f/f70ba3d79684496eae47a6419b4d139c/FLAGe2cc3ac8c [2021-11-07 01:58:53,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/data/441c0a21f/f70ba3d79684496eae47a6419b4d139c [2021-11-07 01:58:53,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:58:53,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:58:53,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:53,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:58:53,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:58:53,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:53" (1/1) ... [2021-11-07 01:58:53,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310b085d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:53, skipping insertion in model container [2021-11-07 01:58:53,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:53" (1/1) ... [2021-11-07 01:58:53,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:58:53,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:54,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2021-11-07 01:58:54,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:54,118 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:58:54,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:58:54,346 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2021-11-07 01:58:54,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:54,359 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:58:54,520 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-1.c[75166,75179] [2021-11-07 01:58:54,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:58:54,548 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:58:54,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54 WrapperNode [2021-11-07 01:58:54,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:58:54,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:58:54,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:58:54,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:58:54,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:58:54,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:58:54,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:58:54,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:58:54,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:58:54,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:58:54,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:58:54,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:58:54,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (1/1) ... [2021-11-07 01:58:54,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:58:54,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:58:54,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:58:54,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:58:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:58:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:58:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:58:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:58:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:58:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:58:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:58:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:58:54,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:58:55,298 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 01:59:07,072 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 01:59:07,073 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 01:59:07,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:07,083 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:59:07,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:07 BoogieIcfgContainer [2021-11-07 01:59:07,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:07,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:07,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:07,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:07,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:58:53" (1/3) ... [2021-11-07 01:59:07,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b44dbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:07, skipping insertion in model container [2021-11-07 01:59:07,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:54" (2/3) ... [2021-11-07 01:59:07,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b44dbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:07, skipping insertion in model container [2021-11-07 01:59:07,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:07" (3/3) ... [2021-11-07 01:59:07,097 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-1.c [2021-11-07 01:59:07,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:07,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:59:07,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:07,175 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:59:07,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:59:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 150 states have (on average 1.72) internal successors, (258), 151 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:59:07,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:07,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:07,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1692197635, now seen corresponding path program 1 times [2021-11-07 01:59:07,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:07,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536955892] [2021-11-07 01:59:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:07,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:07,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:07,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:59:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:07,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:59:07,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:08,122 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 [2021-11-07 01:59:08,143 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 [2021-11-07 01:59:08,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:08,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:59:08,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:08,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 01:59:08,404 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 [2021-11-07 01:59:09,058 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 01:59:09,058 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 717 treesize of output 669 [2021-11-07 01:59:09,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:09,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:59:09,188 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 [2021-11-07 01:59:09,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,328 INFO L244 Elim1Store]: Index analysis took 108 ms [2021-11-07 01:59:09,333 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 129 treesize of output 101 [2021-11-07 01:59:09,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,374 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 [2021-11-07 01:59:09,540 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:59:09,541 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 [2021-11-07 01:59:09,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:09,588 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 [2021-11-07 01:59:09,656 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 [2021-11-07 01:59:09,662 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 [2021-11-07 01:59:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:09,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:10,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:59:10,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 01:59:10,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 01:59:10,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 01:59:10,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 01:59:10,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 01:59:10,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 01:59:10,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:59:10,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 01:59:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:11,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:11,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536955892] [2021-11-07 01:59:11,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536955892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:11,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:11,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:59:11,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023538088] [2021-11-07 01:59:11,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:59:11,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:11,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:59:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:59:11,174 INFO L87 Difference]: Start difference. First operand has 152 states, 150 states have (on average 1.72) internal successors, (258), 151 states have internal predecessors, (258), 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 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:32,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:32,206 INFO L93 Difference]: Finished difference Result 305 states and 515 transitions. [2021-11-07 01:59:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:59:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:59:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:32,223 INFO L225 Difference]: With dead ends: 305 [2021-11-07 01:59:32,223 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 01:59:32,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:59:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 01:59:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-07 01:59:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 138 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2021-11-07 01:59:32,303 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 43 [2021-11-07 01:59:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:32,304 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2021-11-07 01:59:32,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2021-11-07 01:59:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:59:32,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:32,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:32,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:32,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:32,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:32,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:32,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2115844357, now seen corresponding path program 1 times [2021-11-07 01:59:32,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:32,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451357881] [2021-11-07 01:59:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:32,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:32,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:32,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:59:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:59:33,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:33,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:33,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:33,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:33,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:59:33,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:59:33,615 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 01:59:33,616 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 01:59:37,271 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 01:59:37,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 01:59:45,691 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 01:59:45,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 01:59:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:45,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:54,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:54,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451357881] [2021-11-07 01:59:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451357881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:54,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:54,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-07 01:59:54,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707070578] [2021-11-07 01:59:54,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:59:54,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:59:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=15, Unknown=3, NotChecked=0, Total=30 [2021-11-07 01:59:54,248 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:22,309 INFO L93 Difference]: Finished difference Result 301 states and 461 transitions. [2021-11-07 02:00:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:00:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 43 [2021-11-07 02:00:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:22,313 INFO L225 Difference]: With dead ends: 301 [2021-11-07 02:00:22,314 INFO L226 Difference]: Without dead ends: 172 [2021-11-07 02:00:22,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=18, Invalid=21, Unknown=3, NotChecked=0, Total=42 [2021-11-07 02:00:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-07 02:00:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 155. [2021-11-07 02:00:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.551948051948052) internal successors, (239), 154 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 239 transitions. [2021-11-07 02:00:22,331 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 239 transitions. Word has length 43 [2021-11-07 02:00:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:22,331 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 239 transitions. [2021-11-07 02:00:22,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 239 transitions. [2021-11-07 02:00:22,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:00:22,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:22,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:22,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:22,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:22,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash 270477191, now seen corresponding path program 1 times [2021-11-07 02:00:22,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:22,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178180538] [2021-11-07 02:00:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:22,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:22,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:22,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:22,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:00:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:23,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:23,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:23,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:23,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:23,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:00:23,467 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:00:23,467 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:00:26,830 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:00:26,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:00:34,768 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:00:34,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:00:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:34,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:43,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:43,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178180538] [2021-11-07 02:00:43,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178180538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:43,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:43,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-07 02:00:43,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761291725] [2021-11-07 02:00:43,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:00:43,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:00:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=15, Unknown=3, NotChecked=0, Total=30 [2021-11-07 02:00:43,222 INFO L87 Difference]: Start difference. First operand 155 states and 239 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:19,098 INFO L93 Difference]: Finished difference Result 312 states and 480 transitions. [2021-11-07 02:01:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:01:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 43 [2021-11-07 02:01:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:19,102 INFO L225 Difference]: With dead ends: 312 [2021-11-07 02:01:19,103 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 02:01:19,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=18, Invalid=21, Unknown=3, NotChecked=0, Total=42 [2021-11-07 02:01:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 02:01:19,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 150. [2021-11-07 02:01:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.5570469798657718) internal successors, (232), 149 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 232 transitions. [2021-11-07 02:01:19,117 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 232 transitions. Word has length 43 [2021-11-07 02:01:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 232 transitions. [2021-11-07 02:01:19,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 232 transitions. [2021-11-07 02:01:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 02:01:19,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:19,121 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:01:19,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:19,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:19,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:01:19,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:19,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1636123909, now seen corresponding path program 1 times [2021-11-07 02:01:19,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:19,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88013683] [2021-11-07 02:01:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:19,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:19,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:19,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:19,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:01:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:19,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:01:20,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:20,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:20,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:20,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:20,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:20,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:01:20,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:01:20,441 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:01:20,442 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:01:23,760 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:01:23,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:01:31,268 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:01:31,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:01:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:31,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:31,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:31,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88013683] [2021-11-07 02:01:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88013683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:31,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:01:31,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052432298] [2021-11-07 02:01:31,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:01:31,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:01:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:01:31,841 INFO L87 Difference]: Start difference. First operand 150 states and 232 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:20,947 INFO L93 Difference]: Finished difference Result 417 states and 643 transitions. [2021-11-07 02:02:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:02:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-07 02:02:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:20,951 INFO L225 Difference]: With dead ends: 417 [2021-11-07 02:02:20,951 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 02:02:20,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:02:20,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 02:02:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 166. [2021-11-07 02:02:20,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.5575757575757576) internal successors, (257), 165 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 257 transitions. [2021-11-07 02:02:20,969 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 257 transitions. Word has length 56 [2021-11-07 02:02:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:20,970 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 257 transitions. [2021-11-07 02:02:20,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 257 transitions. [2021-11-07 02:02:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:02:20,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:20,973 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:20,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:21,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:21,198 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:02:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -301361520, now seen corresponding path program 1 times [2021-11-07 02:02:21,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:21,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432894210] [2021-11-07 02:02:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:21,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:21,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:02:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:21,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:02:21,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:21,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:21,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:21,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:21,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:21,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:02:21,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:02:22,391 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:02:22,392 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:02:25,642 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:02:25,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:02:32,397 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:02:32,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:02:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:32,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:32,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:32,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432894210] [2021-11-07 02:02:32,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432894210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:32,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:32,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:02:32,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942627693] [2021-11-07 02:02:32,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:02:32,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:02:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:02:32,908 INFO L87 Difference]: Start difference. First operand 166 states and 257 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:03:11,591 INFO L93 Difference]: Finished difference Result 447 states and 692 transitions. [2021-11-07 02:03:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:03:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 57 [2021-11-07 02:03:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:03:11,595 INFO L225 Difference]: With dead ends: 447 [2021-11-07 02:03:11,595 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 02:03:11,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:03:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 02:03:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 177. [2021-11-07 02:03:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5397727272727273) internal successors, (271), 176 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 271 transitions. [2021-11-07 02:03:11,609 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 271 transitions. Word has length 57 [2021-11-07 02:03:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:03:11,609 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 271 transitions. [2021-11-07 02:03:11,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:03:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 271 transitions. [2021-11-07 02:03:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:03:11,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:03:11,612 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:03:11,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:03:11,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:03:11,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:03:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:03:11,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1304983516, now seen corresponding path program 1 times [2021-11-07 02:03:11,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:03:11,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874519271] [2021-11-07 02:03:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:03:11,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:03:11,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:03:11,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:03:11,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:03:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:03:12,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:03:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:03:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:12,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:12,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:03:12,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:03:12,978 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:03:12,979 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:03:16,289 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:03:16,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:03:23,170 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:03:23,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:03:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:03:23,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:03:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:03:23,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:03:23,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874519271] [2021-11-07 02:03:23,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874519271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:03:23,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:03:23,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:03:23,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232455395] [2021-11-07 02:03:23,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:03:23,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:03:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:03:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:03:23,631 INFO L87 Difference]: Start difference. First operand 177 states and 271 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:04:13,765 INFO L93 Difference]: Finished difference Result 460 states and 706 transitions. [2021-11-07 02:04:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:04:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 02:04:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:04:13,769 INFO L225 Difference]: With dead ends: 460 [2021-11-07 02:04:13,769 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 02:04:13,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:04:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 02:04:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 190. [2021-11-07 02:04:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.5238095238095237) internal successors, (288), 189 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 288 transitions. [2021-11-07 02:04:13,780 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 288 transitions. Word has length 57 [2021-11-07 02:04:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:04:13,780 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 288 transitions. [2021-11-07 02:04:13,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:04:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 288 transitions. [2021-11-07 02:04:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:04:13,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:04:13,782 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:04:13,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:04:13,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:04:13,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:04:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:04:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2122058939, now seen corresponding path program 1 times [2021-11-07 02:04:13,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:04:13,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538140401] [2021-11-07 02:04:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:04:13,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:04:13,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:04:13,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:04:14,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:04:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:04:14,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:04:14,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:04:14,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:04:14,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:04:14,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:04:14,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:04:14,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:04:14,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:04:14,993 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:04:14,993 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:04:18,173 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:04:18,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:04:25,746 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:04:25,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:04:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:25,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:04:26,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:04:26,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538140401] [2021-11-07 02:04:26,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538140401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:04:26,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:04:26,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:04:26,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139962074] [2021-11-07 02:04:26,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:04:26,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:04:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:04:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:04:26,217 INFO L87 Difference]: Start difference. First operand 190 states and 288 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:05:09,460 INFO L93 Difference]: Finished difference Result 497 states and 759 transitions. [2021-11-07 02:05:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:05:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 02:05:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:05:09,465 INFO L225 Difference]: With dead ends: 497 [2021-11-07 02:05:09,465 INFO L226 Difference]: Without dead ends: 328 [2021-11-07 02:05:09,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:05:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-07 02:05:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 212. [2021-11-07 02:05:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.5260663507109005) internal successors, (322), 211 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 322 transitions. [2021-11-07 02:05:09,479 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 322 transitions. Word has length 57 [2021-11-07 02:05:09,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:05:09,479 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 322 transitions. [2021-11-07 02:05:09,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:05:09,480 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 322 transitions. [2021-11-07 02:05:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 02:05:09,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:05:09,481 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:05:09,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:05:09,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:05:09,685 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:05:09,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:05:09,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1437563525, now seen corresponding path program 1 times [2021-11-07 02:05:09,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:05:09,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506783561] [2021-11-07 02:05:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:09,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:05:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:05:09,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:05:09,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:05:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:10,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:05:10,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:05:10,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:05:10,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:05:10,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:05:10,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:05:10,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:05:10,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:05:11,092 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:05:11,093 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:05:14,528 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:05:14,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:05:22,012 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:05:22,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:05:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:05:22,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:05:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:05:22,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:22,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506783561] [2021-11-07 02:05:22,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506783561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:05:22,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:05:22,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:05:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185144115] [2021-11-07 02:05:22,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:05:22,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:05:22,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:05:22,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:05:22,475 INFO L87 Difference]: Start difference. First operand 212 states and 322 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:06,064 INFO L93 Difference]: Finished difference Result 520 states and 795 transitions. [2021-11-07 02:06:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:06:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 57 [2021-11-07 02:06:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:06,068 INFO L225 Difference]: With dead ends: 520 [2021-11-07 02:06:06,069 INFO L226 Difference]: Without dead ends: 329 [2021-11-07 02:06:06,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:06:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-07 02:06:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 213. [2021-11-07 02:06:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.5141509433962264) internal successors, (321), 212 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 321 transitions. [2021-11-07 02:06:06,081 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 321 transitions. Word has length 57 [2021-11-07 02:06:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:06,082 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 321 transitions. [2021-11-07 02:06:06,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 321 transitions. [2021-11-07 02:06:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 02:06:06,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:06,084 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 02:06:06,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 02:06:06,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:06,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash -199560092, now seen corresponding path program 1 times [2021-11-07 02:06:06,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:06,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205044588] [2021-11-07 02:06:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:06,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:06,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:06,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:06:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:07,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:06:07,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:07,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:07,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:07,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:06:07,766 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:06:07,767 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:06:11,119 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:06:11,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:06:18,130 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:06:18,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:06:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:18,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:18,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:18,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205044588] [2021-11-07 02:06:18,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205044588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:18,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:18,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:06:18,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447963325] [2021-11-07 02:06:18,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:06:18,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:06:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:06:18,599 INFO L87 Difference]: Start difference. First operand 213 states and 321 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:58,254 INFO L93 Difference]: Finished difference Result 529 states and 799 transitions. [2021-11-07 02:06:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:06:58,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 58 [2021-11-07 02:06:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:58,258 INFO L225 Difference]: With dead ends: 529 [2021-11-07 02:06:58,258 INFO L226 Difference]: Without dead ends: 337 [2021-11-07 02:06:58,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:06:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-07 02:06:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 214. [2021-11-07 02:06:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.4976525821596245) internal successors, (319), 213 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 319 transitions. [2021-11-07 02:06:58,271 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 319 transitions. Word has length 58 [2021-11-07 02:06:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:58,272 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 319 transitions. [2021-11-07 02:06:58,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 319 transitions. [2021-11-07 02:06:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:06:58,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:58,274 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:58,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 02:06:58,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:58,487 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:58,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:58,488 INFO L85 PathProgramCache]: Analyzing trace with hash -204940119, now seen corresponding path program 1 times [2021-11-07 02:06:58,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:58,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615162434] [2021-11-07 02:06:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:58,489 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:58,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:58,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:06:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:59,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:06:59,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:59,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:59,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:59,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:59,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:06:59,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:06:59,901 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:06:59,901 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:07:03,337 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:07:03,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:07:10,576 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:07:10,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:07:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:10,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:11,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:11,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615162434] [2021-11-07 02:07:11,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615162434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:11,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:11,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:07:11,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527042682] [2021-11-07 02:07:11,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:07:11,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:07:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:07:11,136 INFO L87 Difference]: Start difference. First operand 214 states and 319 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:50,038 INFO L93 Difference]: Finished difference Result 541 states and 808 transitions. [2021-11-07 02:07:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:07:50,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:07:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:50,043 INFO L225 Difference]: With dead ends: 541 [2021-11-07 02:07:50,043 INFO L226 Difference]: Without dead ends: 348 [2021-11-07 02:07:50,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:07:50,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-07 02:07:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 239. [2021-11-07 02:07:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4705882352941178) internal successors, (350), 238 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 350 transitions. [2021-11-07 02:07:50,059 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 350 transitions. Word has length 59 [2021-11-07 02:07:50,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:50,060 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 350 transitions. [2021-11-07 02:07:50,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 350 transitions. [2021-11-07 02:07:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:07:50,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:50,062 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:07:50,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:50,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:50,281 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:07:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1181845291, now seen corresponding path program 1 times [2021-11-07 02:07:50,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:50,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241178644] [2021-11-07 02:07:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:50,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:50,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:50,284 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:50,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:07:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:51,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:07:51,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:51,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:07:51,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:07:51,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241178644] [2021-11-07 02:07:51,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241178644] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:07:51,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:07:51,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:07:51,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83206866] [2021-11-07 02:07:51,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:07:51,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:07:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:07:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:51,592 INFO L87 Difference]: Start difference. First operand 239 states and 350 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:07:51,668 INFO L93 Difference]: Finished difference Result 853 states and 1265 transitions. [2021-11-07 02:07:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:07:51,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:07:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:07:51,674 INFO L225 Difference]: With dead ends: 853 [2021-11-07 02:07:51,674 INFO L226 Difference]: Without dead ends: 646 [2021-11-07 02:07:51,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:07:51,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-11-07 02:07:51,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 443. [2021-11-07 02:07:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.4638009049773755) internal successors, (647), 442 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 647 transitions. [2021-11-07 02:07:51,699 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 647 transitions. Word has length 59 [2021-11-07 02:07:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:07:51,700 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 647 transitions. [2021-11-07 02:07:51,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:07:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 647 transitions. [2021-11-07 02:07:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 02:07:51,702 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:07:51,702 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:07:51,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:07:51,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:07:51,920 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:07:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:07:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash 284452013, now seen corresponding path program 1 times [2021-11-07 02:07:51,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:07:51,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569860256] [2021-11-07 02:07:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:07:51,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:07:51,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:07:51,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:07:51,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:07:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:07:52,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:07:52,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:52,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:07:52,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:07:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:07:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:07:52,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:07:52,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:07:53,392 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:07:53,392 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:07:56,884 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:07:56,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:08:04,052 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:08:04,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:08:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:04,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:04,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:04,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569860256] [2021-11-07 02:08:04,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569860256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:04,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:04,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:08:04,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688054078] [2021-11-07 02:08:04,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:08:04,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:08:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:08:04,554 INFO L87 Difference]: Start difference. First operand 443 states and 647 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:41,683 INFO L93 Difference]: Finished difference Result 1113 states and 1636 transitions. [2021-11-07 02:08:41,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:08:41,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 02:08:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:41,690 INFO L225 Difference]: With dead ends: 1113 [2021-11-07 02:08:41,690 INFO L226 Difference]: Without dead ends: 707 [2021-11-07 02:08:41,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:08:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-07 02:08:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 492. [2021-11-07 02:08:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.4419551934826884) internal successors, (708), 491 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 708 transitions. [2021-11-07 02:08:41,723 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 708 transitions. Word has length 59 [2021-11-07 02:08:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:41,723 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 708 transitions. [2021-11-07 02:08:41,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:41,724 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 708 transitions. [2021-11-07 02:08:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:08:41,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:41,726 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:41,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:41,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:41,941 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:08:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash -285488759, now seen corresponding path program 1 times [2021-11-07 02:08:41,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:41,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688343688] [2021-11-07 02:08:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:41,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:41,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:41,943 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:41,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:08:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:43,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:08:43,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:43,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:43,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:08:43,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:08:43,532 INFO L354 Elim1Store]: treesize reduction 1130, result has 5.7 percent of original size [2021-11-07 02:08:43,533 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 7 case distinctions, treesize of input 80 treesize of output 78 [2021-11-07 02:08:46,968 INFO L354 Elim1Store]: treesize reduction 2459, result has 4.9 percent of original size [2021-11-07 02:08:46,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 80 case distinctions, treesize of input 238 treesize of output 174 [2021-11-07 02:08:54,230 INFO L354 Elim1Store]: treesize reduction 792, result has 0.1 percent of original size [2021-11-07 02:08:54,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 183 treesize of output 87 [2021-11-07 02:08:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:54,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688343688] [2021-11-07 02:08:54,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688343688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:54,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:54,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:08:54,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730767576] [2021-11-07 02:08:54,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:08:54,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:08:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-07 02:08:54,753 INFO L87 Difference]: Start difference. First operand 492 states and 708 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:32,595 INFO L93 Difference]: Finished difference Result 1196 states and 1751 transitions. [2021-11-07 02:09:32,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:09:32,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:32,602 INFO L225 Difference]: With dead ends: 1196 [2021-11-07 02:09:32,602 INFO L226 Difference]: Without dead ends: 741 [2021-11-07 02:09:32,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2021-11-07 02:09:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-11-07 02:09:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 496. [2021-11-07 02:09:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.4303030303030304) internal successors, (708), 495 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 708 transitions. [2021-11-07 02:09:32,640 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 708 transitions. Word has length 60 [2021-11-07 02:09:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:32,641 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 708 transitions. [2021-11-07 02:09:32,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 708 transitions. [2021-11-07 02:09:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 02:09:32,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:32,643 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:32,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:32,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,856 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 844599537, now seen corresponding path program 1 times [2021-11-07 02:09:32,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:32,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746834261] [2021-11-07 02:09:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:32,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:32,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:32,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:09:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:33,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:33,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:33,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:33,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:34,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:34,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:34,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:34,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:34,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:34,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:34,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:34,386 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 02:09:34,386 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 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-07 02:09:35,637 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:09:35,638 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 107 treesize of output 35 [2021-11-07 02:09:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:35,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:36,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:36,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746834261] [2021-11-07 02:09:36,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746834261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:36,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:36,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:09:36,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435875092] [2021-11-07 02:09:36,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:09:36,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:09:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:09:36,015 INFO L87 Difference]: Start difference. First operand 496 states and 708 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:47,237 INFO L93 Difference]: Finished difference Result 1012 states and 1453 transitions. [2021-11-07 02:09:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 02:09:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:47,249 INFO L225 Difference]: With dead ends: 1012 [2021-11-07 02:09:47,249 INFO L226 Difference]: Without dead ends: 553 [2021-11-07 02:09:47,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:09:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-07 02:09:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 539. [2021-11-07 02:09:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4219330855018588) internal successors, (765), 538 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 765 transitions. [2021-11-07 02:09:47,283 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 765 transitions. Word has length 60 [2021-11-07 02:09:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:47,283 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 765 transitions. [2021-11-07 02:09:47,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 765 transitions. [2021-11-07 02:09:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:09:47,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:47,286 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:47,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:47,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:09:47,506 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:09:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1394397078, now seen corresponding path program 1 times [2021-11-07 02:09:47,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:47,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120085584] [2021-11-07 02:09:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:47,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:47,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:47,509 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:47,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:09:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:48,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:09:48,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:48,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:48,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:48,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:48,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:09:48,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:49,094 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:09:49,094 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 [2021-11-07 02:09:49,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:09:49,543 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:09:49,543 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 [2021-11-07 02:09:52,088 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:09:52,089 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 [2021-11-07 02:09:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:09:52,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:09:52,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:52,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120085584] [2021-11-07 02:09:52,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120085584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:52,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:09:52,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:09:52,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234352089] [2021-11-07 02:09:52,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:09:52,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:09:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:09:52,607 INFO L87 Difference]: Start difference. First operand 539 states and 765 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:33,021 INFO L93 Difference]: Finished difference Result 1500 states and 2180 transitions. [2021-11-07 02:10:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:10:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 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 82 [2021-11-07 02:10:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:33,028 INFO L225 Difference]: With dead ends: 1500 [2021-11-07 02:10:33,028 INFO L226 Difference]: Without dead ends: 998 [2021-11-07 02:10:33,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:10:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-07 02:10:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 647. [2021-11-07 02:10:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.4504643962848298) internal successors, (937), 646 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 937 transitions. [2021-11-07 02:10:33,072 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 937 transitions. Word has length 82 [2021-11-07 02:10:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 937 transitions. [2021-11-07 02:10:33,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 937 transitions. [2021-11-07 02:10:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 02:10:33,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:33,076 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:33,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:33,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:33,292 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 268852943, now seen corresponding path program 1 times [2021-11-07 02:10:33,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:33,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145438323] [2021-11-07 02:10:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:33,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:33,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:33,297 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:33,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:10:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:10:34,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:10:34,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:34,986 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:10:34,987 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 [2021-11-07 02:10:35,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:35,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:35,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:10:35,403 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:10:35,404 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 [2021-11-07 02:10:37,950 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:10:37,950 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 [2021-11-07 02:10:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:10:37,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:10:38,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:38,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145438323] [2021-11-07 02:10:38,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145438323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:38,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:38,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:10:38,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334592206] [2021-11-07 02:10:38,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:10:38,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:10:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:10:38,458 INFO L87 Difference]: Start difference. First operand 647 states and 937 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:15,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:11:15,711 INFO L93 Difference]: Finished difference Result 1743 states and 2577 transitions. [2021-11-07 02:11:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:11:15,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 83 [2021-11-07 02:11:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:11:15,720 INFO L225 Difference]: With dead ends: 1743 [2021-11-07 02:11:15,720 INFO L226 Difference]: Without dead ends: 1133 [2021-11-07 02:11:15,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:11:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-07 02:11:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 776. [2021-11-07 02:11:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 1.4941935483870967) internal successors, (1158), 775 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1158 transitions. [2021-11-07 02:11:15,774 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1158 transitions. Word has length 83 [2021-11-07 02:11:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:11:15,775 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1158 transitions. [2021-11-07 02:11:15,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:11:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1158 transitions. [2021-11-07 02:11:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 02:11:15,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:11:15,779 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:11:15,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:11:16,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:11:16,001 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:11:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:11:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash -149064354, now seen corresponding path program 1 times [2021-11-07 02:11:16,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:11:16,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631598151] [2021-11-07 02:11:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:11:16,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:11:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:11:16,004 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:11:16,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:11:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:11:17,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:11:17,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:11:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:17,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:11:17,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:11:17,757 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:11:17,757 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 [2021-11-07 02:11:17,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:11:17,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:11:17,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:11:18,180 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:11:18,181 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 [2021-11-07 02:11:20,216 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:11:20,216 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 [2021-11-07 02:11:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:11:20,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:11:20,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:11:20,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631598151] [2021-11-07 02:11:20,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631598151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:11:20,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:11:20,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:11:20,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398927277] [2021-11-07 02:11:20,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:11:20,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:11:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:11:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:11:20,909 INFO L87 Difference]: Start difference. First operand 776 states and 1158 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:02,378 INFO L93 Difference]: Finished difference Result 2072 states and 3136 transitions. [2021-11-07 02:12:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:12:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 02:12:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:02,386 INFO L225 Difference]: With dead ends: 2072 [2021-11-07 02:12:02,387 INFO L226 Difference]: Without dead ends: 1333 [2021-11-07 02:12:02,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:12:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-11-07 02:12:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 928. [2021-11-07 02:12:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.5080906148867315) internal successors, (1398), 927 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1398 transitions. [2021-11-07 02:12:02,446 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1398 transitions. Word has length 110 [2021-11-07 02:12:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:02,446 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1398 transitions. [2021-11-07 02:12:02,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1398 transitions. [2021-11-07 02:12:02,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 02:12:02,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:02,451 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:12:02,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:12:02,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,673 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:12:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:12:02,673 INFO L85 PathProgramCache]: Analyzing trace with hash -13167812, now seen corresponding path program 1 times [2021-11-07 02:12:02,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:12:02,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282613903] [2021-11-07 02:12:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:12:02,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:12:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:12:02,676 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:12:02,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 02:12:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:12:04,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:12:04,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:12:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:04,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:12:04,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:12:04,429 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 02:12:04,430 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 [2021-11-07 02:12:04,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:12:04,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:12:04,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:12:04,849 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:12:04,850 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 [2021-11-07 02:12:06,762 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:12:06,762 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 [2021-11-07 02:12:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:12:06,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:12:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 02:12:07,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:12:07,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282613903] [2021-11-07 02:12:07,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282613903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:12:07,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:12:07,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:12:07,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737721819] [2021-11-07 02:12:07,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:12:07,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:12:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:12:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:12:07,397 INFO L87 Difference]: Start difference. First operand 928 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:12:43,804 INFO L93 Difference]: Finished difference Result 2105 states and 3178 transitions. [2021-11-07 02:12:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:12:43,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 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 111 [2021-11-07 02:12:43,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:12:43,812 INFO L225 Difference]: With dead ends: 2105 [2021-11-07 02:12:43,812 INFO L226 Difference]: Without dead ends: 1214 [2021-11-07 02:12:43,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:12:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2021-11-07 02:12:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 861. [2021-11-07 02:12:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.494186046511628) internal successors, (1285), 860 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1285 transitions. [2021-11-07 02:12:43,882 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1285 transitions. Word has length 111 [2021-11-07 02:12:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:12:43,882 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1285 transitions. [2021-11-07 02:12:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:12:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1285 transitions. [2021-11-07 02:12:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 02:12:43,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:12:43,886 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-11-07 02:12:43,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3c227a2-f752-4812-808e-a13fbe1e175c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0