./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.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_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/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_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/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_93ae38e8-04c5-445a-9ece-6d5370912297/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 e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:52,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:52,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:52,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:52,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:52,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:52,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:52,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:52,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:52,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:52,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:52,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:52,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:52,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:52,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:52,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:52,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:52,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:52,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:52,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:52,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:52,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:52,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:52,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:52,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:52,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:52,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:52,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:52,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:52,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:52,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:52,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:52,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:52,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:52,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:52,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:52,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:52,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:52,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:52,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:52,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:52,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:45:52,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:52,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:52,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:52,325 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:52,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:52,326 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:52,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:45:52,326 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:52,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:52,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:45:52,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:45:52,327 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:52,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:45:52,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:45:52,328 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:45:52,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:52,330 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:52,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:45:52,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:52,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:52,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:52,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:52,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:52,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:52,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:52,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:52,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:52,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:52,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:52,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:52,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:52,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:52,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:52,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:52,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:45:52,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:45:52,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:52,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:52,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:52,336 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_93ae38e8-04c5-445a-9ece-6d5370912297/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 [2021-11-07 01:45:52,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:52,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:52,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:52,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:52,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:52,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-07 01:45:52,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/4ac5880ac/8f113910a4064a55ab16fb4db31be612/FLAGde542900e [2021-11-07 01:45:53,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:53,435 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-07 01:45:53,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/4ac5880ac/8f113910a4064a55ab16fb4db31be612/FLAGde542900e [2021-11-07 01:45:53,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/4ac5880ac/8f113910a4064a55ab16fb4db31be612 [2021-11-07 01:45:53,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:53,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:53,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:53,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:53,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:53,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:53" (1/1) ... [2021-11-07 01:45:53,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7126becf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:53, skipping insertion in model container [2021-11-07 01:45:53,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:53" (1/1) ... [2021-11-07 01:45:53,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:53,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:54,148 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_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-07 01:45:54,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:54,188 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 01:45:54,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c74ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:54, skipping insertion in model container [2021-11-07 01:45:54,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:54,189 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:45:54,191 INFO L168 Benchmark]: Toolchain (without parser) took 573.25 ms. Allocated memory is still 96.5 MB. Free memory was 60.5 MB in the beginning and 63.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:54,192 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 73.8 MB in the beginning and 73.8 MB in the end (delta: 24.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:45:54,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.25 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 63.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:45:54,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 73.8 MB in the beginning and 73.8 MB in the end (delta: 24.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 570.25 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 63.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 12.6 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_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/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_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/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_93ae38e8-04c5-445a-9ece-6d5370912297/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 e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:45:56,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:45:56,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:45:56,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:45:56,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:45:56,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:45:56,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:45:56,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:45:56,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:45:56,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:45:56,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:45:56,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:45:56,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:45:56,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:45:56,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:45:56,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:45:56,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:45:56,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:45:56,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:45:56,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:45:56,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:45:56,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:45:56,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:45:56,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:45:56,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:45:56,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:45:56,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:45:56,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:45:56,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:45:56,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:45:56,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:45:56,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:45:56,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:45:56,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:45:56,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:45:56,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:45:56,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:45:56,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:45:56,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:45:56,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:45:56,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:45:56,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:45:56,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:45:56,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:45:56,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:45:56,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:45:56,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:45:56,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:45:56,625 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:45:56,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:45:56,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:45:56,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:45:56,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:45:56,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:45:56,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:45:56,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:45:56,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:45:56,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:45:56,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:45:56,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:45:56,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:45:56,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:45:56,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:45:56,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:45:56,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:45:56,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:45:56,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:45:56,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:45:56,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:56,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:45:56,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:45:56,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:45:56,634 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:45:56,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:45:56,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:45:56,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:45:56,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:45:56,635 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_93ae38e8-04c5-445a-9ece-6d5370912297/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e951bfa557af694cc1e8699e574c7b4724d1be498cab6731e1080e9fedb61dc3 [2021-11-07 01:45:57,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:45:57,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:45:57,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:45:57,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:45:57,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:45:57,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-07 01:45:57,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/9f39a4b59/93b4dc72fc2d495da31382afdaf198c2/FLAGa14ae5def [2021-11-07 01:45:57,907 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:45:57,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c [2021-11-07 01:45:57,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/9f39a4b59/93b4dc72fc2d495da31382afdaf198c2/FLAGa14ae5def [2021-11-07 01:45:58,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/data/9f39a4b59/93b4dc72fc2d495da31382afdaf198c2 [2021-11-07 01:45:58,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:45:58,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:45:58,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:58,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:45:58,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:45:58,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:58" (1/1) ... [2021-11-07 01:45:58,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534bd3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:58, skipping insertion in model container [2021-11-07 01:45:58,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:45:58" (1/1) ... [2021-11-07 01:45:58,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:45:58,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:58,633 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_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-07 01:45:58,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:58,683 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:45:58,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:45:58,831 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_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-07 01:45:58,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:58,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:45:58,970 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_93ae38e8-04c5-445a-9ece-6d5370912297/sv-benchmarks/c/openssl/s3_srvr.blast.13.i.cil-2.c[74353,74366] [2021-11-07 01:45:58,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:45:59,007 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:45:59,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59 WrapperNode [2021-11-07 01:45:59,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:45:59,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:59,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:45:59,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:45:59,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:45:59,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:45:59,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:45:59,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:45:59,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:45:59,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:45:59,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:45:59,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:45:59,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (1/1) ... [2021-11-07 01:45:59,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:45:59,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:45:59,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:45:59,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:45:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:45:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:45:59,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:45:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:45:59,591 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 01:46:09,788 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 01:46:09,788 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 01:46:09,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:46:09,797 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:46:09,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:46:09 BoogieIcfgContainer [2021-11-07 01:46:09,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:46:09,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:46:09,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:46:09,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:46:09,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:45:58" (1/3) ... [2021-11-07 01:46:09,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b158eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:46:09, skipping insertion in model container [2021-11-07 01:46:09,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:45:59" (2/3) ... [2021-11-07 01:46:09,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b158eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:46:09, skipping insertion in model container [2021-11-07 01:46:09,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:46:09" (3/3) ... [2021-11-07 01:46:09,807 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.13.i.cil-2.c [2021-11-07 01:46:09,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:46:09,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:46:09,860 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:46:09,866 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 01:46:09,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:46:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 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 01:46:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:46:09,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:09,894 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] [2021-11-07 01:46:09,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:09,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:09,900 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2021-11-07 01:46:09,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:09,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317165888] [2021-11-07 01:46:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:09,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:09,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:09,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:46:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:10,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:10,672 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 01:46:10,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:10,926 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 01:46:10,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:10,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317165888] [2021-11-07 01:46:10,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317165888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:10,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:10,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:46:10,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811326671] [2021-11-07 01:46:10,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:10,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:10,960 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:46:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:11,222 INFO L93 Difference]: Finished difference Result 566 states and 965 transitions. [2021-11-07 01:46:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:46:11,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 37 [2021-11-07 01:46:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:11,241 INFO L225 Difference]: With dead ends: 566 [2021-11-07 01:46:11,241 INFO L226 Difference]: Without dead ends: 387 [2021-11-07 01:46:11,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-07 01:46:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2021-11-07 01:46:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5286458333333333) internal successors, (587), 384 states have internal predecessors, (587), 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 01:46:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 587 transitions. [2021-11-07 01:46:11,343 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 587 transitions. Word has length 37 [2021-11-07 01:46:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:11,344 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 587 transitions. [2021-11-07 01:46:11,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:46:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 587 transitions. [2021-11-07 01:46:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:46:11,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:11,351 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 01:46:11,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:11,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:11,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 457194935, now seen corresponding path program 1 times [2021-11-07 01:46:11,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:11,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396482525] [2021-11-07 01:46:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:11,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:11,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:11,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:11,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:46:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:11,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:12,281 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 01:46:12,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:12,595 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 01:46:12,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:12,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396482525] [2021-11-07 01:46:12,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396482525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:12,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:12,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:46:12,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968749603] [2021-11-07 01:46:12,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:12,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:12,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:12,606 INFO L87 Difference]: Start difference. First operand 385 states and 587 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 01:46:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:13,386 INFO L93 Difference]: Finished difference Result 880 states and 1354 transitions. [2021-11-07 01:46:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:46:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 01:46:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:13,396 INFO L225 Difference]: With dead ends: 880 [2021-11-07 01:46:13,396 INFO L226 Difference]: Without dead ends: 629 [2021-11-07 01:46:13,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:13,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-07 01:46:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 627. [2021-11-07 01:46:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.5191693290734825) internal successors, (951), 626 states have internal predecessors, (951), 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 01:46:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 951 transitions. [2021-11-07 01:46:13,462 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 951 transitions. Word has length 60 [2021-11-07 01:46:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:13,463 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 951 transitions. [2021-11-07 01:46:13,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 01:46:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 951 transitions. [2021-11-07 01:46:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 01:46:13,472 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:13,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:13,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:13,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:13,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 335691035, now seen corresponding path program 1 times [2021-11-07 01:46:13,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:13,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830946573] [2021-11-07 01:46:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:13,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:13,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:13,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:46:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:14,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:14,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:46:14,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:46:14,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:14,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830946573] [2021-11-07 01:46:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830946573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:14,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:46:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83552074] [2021-11-07 01:46:14,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:14,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:14,996 INFO L87 Difference]: Start difference. First operand 627 states and 951 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 01:46:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:15,814 INFO L93 Difference]: Finished difference Result 1366 states and 2084 transitions. [2021-11-07 01:46:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:46:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 112 [2021-11-07 01:46:15,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:15,826 INFO L225 Difference]: With dead ends: 1366 [2021-11-07 01:46:15,827 INFO L226 Difference]: Without dead ends: 873 [2021-11-07 01:46:15,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-07 01:46:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-11-07 01:46:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5160550458715596) internal successors, (1322), 872 states have internal predecessors, (1322), 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 01:46:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1322 transitions. [2021-11-07 01:46:15,927 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1322 transitions. Word has length 112 [2021-11-07 01:46:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:15,929 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1322 transitions. [2021-11-07 01:46:15,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 01:46:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1322 transitions. [2021-11-07 01:46:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 01:46:15,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:15,946 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:15,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:16,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:16,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:16,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1244955076, now seen corresponding path program 1 times [2021-11-07 01:46:16,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:16,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120441174] [2021-11-07 01:46:16,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:16,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:16,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:16,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:46:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:16,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:46:16,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:46:17,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:46:17,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:17,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120441174] [2021-11-07 01:46:17,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120441174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:17,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:17,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:46:17,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525756782] [2021-11-07 01:46:17,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:46:17,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:46:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:17,945 INFO L87 Difference]: Start difference. First operand 873 states and 1322 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 01:46:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:18,994 INFO L93 Difference]: Finished difference Result 1858 states and 2823 transitions. [2021-11-07 01:46:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:46:18,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 149 [2021-11-07 01:46:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:19,005 INFO L225 Difference]: With dead ends: 1858 [2021-11-07 01:46:19,005 INFO L226 Difference]: Without dead ends: 1119 [2021-11-07 01:46:19,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:46:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-07 01:46:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-07 01:46:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.5107334525939178) internal successors, (1689), 1118 states have internal predecessors, (1689), 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 01:46:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1689 transitions. [2021-11-07 01:46:19,069 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1689 transitions. Word has length 149 [2021-11-07 01:46:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:19,070 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1689 transitions. [2021-11-07 01:46:19,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 01:46:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1689 transitions. [2021-11-07 01:46:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 01:46:19,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:19,076 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:19,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:19,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:19,297 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash -490932893, now seen corresponding path program 1 times [2021-11-07 01:46:19,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:19,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235341071] [2021-11-07 01:46:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:19,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:19,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:46:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:20,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:46:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:20,444 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 01:46:20,457 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 01:46:20,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:20,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:46:20,616 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 01:46:21,195 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 01:46:21,207 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 849 treesize of output 821 [2021-11-07 01:46:21,316 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:46:21,317 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 01:46:21,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:21,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:46:21,350 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 01:46:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,474 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 01:46:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,508 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 01:46:21,652 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 01:46:21,653 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 01:46:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:21,687 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 01:46:21,722 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 01:46:21,727 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 01:46:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-07 01:46:22,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:22,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:22,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 01:46:22,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:22,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 01:46:23,067 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 01:46:23,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 01:46:23,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 01:46:23,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 01:46:23,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 01:46:23,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:46:23,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 01:46:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-07 01:46:23,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:23,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235341071] [2021-11-07 01:46:23,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235341071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:23,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:23,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:46:23,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278198597] [2021-11-07 01:46:23,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:46:23,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:46:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:46:23,722 INFO L87 Difference]: Start difference. First operand 1119 states and 1689 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:46:55,008 INFO L93 Difference]: Finished difference Result 2235 states and 3374 transitions. [2021-11-07 01:46:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:46:55,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-07 01:46:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:46:55,018 INFO L225 Difference]: With dead ends: 2235 [2021-11-07 01:46:55,018 INFO L226 Difference]: Without dead ends: 1119 [2021-11-07 01:46:55,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:46:55,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-07 01:46:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1119. [2021-11-07 01:46:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 1.5098389982110911) internal successors, (1688), 1118 states have internal predecessors, (1688), 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 01:46:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1688 transitions. [2021-11-07 01:46:55,066 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1688 transitions. Word has length 165 [2021-11-07 01:46:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:46:55,066 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 1688 transitions. [2021-11-07 01:46:55,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:46:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1688 transitions. [2021-11-07 01:46:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 01:46:55,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:46:55,071 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:46:55,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:55,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:55,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:46:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:46:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash 7623909, now seen corresponding path program 1 times [2021-11-07 01:46:55,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:46:55,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728594824] [2021-11-07 01:46:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:46:55,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:46:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:46:55,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:46:55,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:46:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:46:56,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:46:56,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:46:56,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:56,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:56,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:46:56,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:46:56,627 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-07 01:46:56,628 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 01:46:56,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:46:56,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:46:56,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:46:57,093 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 01:46:57,094 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 01:46:58,665 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:46:58,666 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 01:46:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 01:46:59,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:46:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-07 01:46:59,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:46:59,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728594824] [2021-11-07 01:46:59,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728594824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:46:59,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:46:59,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 01:46:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149679512] [2021-11-07 01:46:59,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:46:59,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:46:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:46:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:46:59,741 INFO L87 Difference]: Start difference. First operand 1119 states and 1688 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:47:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:47:45,836 INFO L93 Difference]: Finished difference Result 4222 states and 6394 transitions. [2021-11-07 01:47:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:47:45,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 165 [2021-11-07 01:47:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:47:45,857 INFO L225 Difference]: With dead ends: 4222 [2021-11-07 01:47:45,857 INFO L226 Difference]: Without dead ends: 3113 [2021-11-07 01:47:45,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:47:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2021-11-07 01:47:45,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 1343. [2021-11-07 01:47:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.5454545454545454) internal successors, (2074), 1342 states have internal predecessors, (2074), 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 01:47:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2074 transitions. [2021-11-07 01:47:45,974 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2074 transitions. Word has length 165 [2021-11-07 01:47:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:47:45,974 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 2074 transitions. [2021-11-07 01:47:45,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:47:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2074 transitions. [2021-11-07 01:47:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 01:47:45,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:47:45,986 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:47:46,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:47:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:47:46,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:47:46,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:47:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2042784989, now seen corresponding path program 1 times [2021-11-07 01:47:46,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:47:46,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235375407] [2021-11-07 01:47:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:47:46,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:47:46,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:47:46,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:47:46,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:47:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:47:47,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:47:47,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:47:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:47:47,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:47:47,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:47:47,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:47:47,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:47:47,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:47:47,878 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-07 01:47:47,878 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 01:47:49,582 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 01:47:49,583 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 01:47:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 01:47:49,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:47:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 01:47:50,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:47:50,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235375407] [2021-11-07 01:47:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235375407] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:47:50,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:47:50,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:47:50,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006653628] [2021-11-07 01:47:50,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:47:50,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:47:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:47:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:47:50,285 INFO L87 Difference]: Start difference. First operand 1343 states and 2074 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 01:48:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:48:19,726 INFO L93 Difference]: Finished difference Result 3248 states and 5018 transitions. [2021-11-07 01:48:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:48:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 165 [2021-11-07 01:48:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:48:19,758 INFO L225 Difference]: With dead ends: 3248 [2021-11-07 01:48:19,758 INFO L226 Difference]: Without dead ends: 1915 [2021-11-07 01:48:19,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 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 01:48:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-07 01:48:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1595. [2021-11-07 01:48:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.5777917189460477) internal successors, (2515), 1594 states have internal predecessors, (2515), 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 01:48:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2515 transitions. [2021-11-07 01:48:19,868 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2515 transitions. Word has length 165 [2021-11-07 01:48:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:48:19,869 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2515 transitions. [2021-11-07 01:48:19,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 01:48:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2515 transitions. [2021-11-07 01:48:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 01:48:19,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:48:19,877 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:48:19,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:48:20,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:48:20,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:48:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:48:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -266035401, now seen corresponding path program 1 times [2021-11-07 01:48:20,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:48:20,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796350034] [2021-11-07 01:48:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:48:20,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:48:20,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:48:20,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:48:20,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ae38e8-04c5-445a-9ece-6d5370912297/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:48:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:48:23,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:48:23,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:48:24,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:24,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:24,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 01:48:24,199 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 109 treesize of output 97 [2021-11-07 01:48:24,205 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 97 treesize of output 73 [2021-11-07 01:48:24,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:24,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:24,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:24,799 INFO L354 Elim1Store]: treesize reduction 935, result has 12.3 percent of original size [2021-11-07 01:48:24,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 73 treesize of output 157 [2021-11-07 01:48:25,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:25,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:25,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:48:25,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:25,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:48:26,400 INFO L354 Elim1Store]: treesize reduction 1103, result has 6.3 percent of original size [2021-11-07 01:48:26,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 177 treesize of output 246 [2021-11-07 01:49:09,368 INFO L354 Elim1Store]: treesize reduction 366, result has 29.8 percent of original size [2021-11-07 01:49:09,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 28 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 231 treesize of output 313 [2021-11-07 01:49:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-11-07 01:49:11,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:11,819 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 294 treesize of output 246 [2021-11-07 01:49:11,823 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 246 treesize of output 150 [2021-11-07 01:49:13,840 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_58 (_ BitVec 32)) (v_arrayElimCell_57 (_ BitVec 32))) (not (= (let ((.cse0 (select (store |c_#memory_int| v_arrayElimCell_57 (store (store (store (store (select |c_#memory_int| v_arrayElimCell_57) (bvadd v_arrayElimCell_58 (_ bv844 32)) ((_ extract 7 0) (_ bv3 32))) (bvadd v_arrayElimCell_58 (_ bv845 32)) ((_ extract 15 8) (_ bv3 32))) (bvadd (_ bv846 32) v_arrayElimCell_58) ((_ extract 23 16) (_ bv3 32))) (bvadd v_arrayElimCell_58 (_ bv847 32)) ((_ extract 31 24) (_ bv3 32)))) c_ULTIMATE.start_ssl3_accept_~s.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv55 32) c_ULTIMATE.start_ssl3_accept_~s.offset)) (select .cse0 (bvadd c_ULTIMATE.start_ssl3_accept_~s.offset (_ bv54 32)))) (select .cse0 (bvadd (_ bv53 32) c_ULTIMATE.start_ssl3_accept_~s.offset))) (select .cse0 (bvadd c_ULTIMATE.start_ssl3_accept_~s.offset (_ bv52 32))))) (_ bv8640 32)))) is different from false