./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF --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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:59,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:59,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:59,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:59,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:59,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:59,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:59,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:59,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:59,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:59,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:59,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:59,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:59,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:59,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:59,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:59,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:59,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:59,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:59,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:59,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:59,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:59,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:59,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:59,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:59,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:59,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:59,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:59,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:59,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:59,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:59,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:59,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:59,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:59,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:59,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:59,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:59,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:59,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:59,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:59,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:59,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:39:59,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:59,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:59,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:59,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:59,355 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:59,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:59,355 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:59,355 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:39:59,356 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:59,356 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:59,356 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:39:59,356 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:39:59,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:59,359 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:39:59,360 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:39:59,360 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:39:59,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:59,361 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:39:59,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:39:59,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:39:59,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:59,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:59,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:59,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:59,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:39:59,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:39:59,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:59,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:59,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:59,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:59,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:59,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:59,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:59,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:59,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:59,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:39:59,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:39:59,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:59,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:59,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:59,369 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-13 02:39:59,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:59,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:59,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:59,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:59,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:59,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-13 02:39:59,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/94b08ca9d/84cf136482da4f848ed11641487c446a/FLAG73d68e839 [2021-11-13 02:40:00,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:40:00,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-13 02:40:00,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/94b08ca9d/84cf136482da4f848ed11641487c446a/FLAG73d68e839 [2021-11-13 02:40:00,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/94b08ca9d/84cf136482da4f848ed11641487c446a [2021-11-13 02:40:00,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:40:00,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:40:00,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:00,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:40:00,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:40:00,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:00" (1/1) ... [2021-11-13 02:40:00,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e57e49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:00, skipping insertion in model container [2021-11-13 02:40:00,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:00" (1/1) ... [2021-11-13 02:40:00,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:40:00,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:01,279 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-13 02:40:01,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:01,302 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) [2021-11-13 02:40:01,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@629357d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:01, skipping insertion in model container [2021-11-13 02:40:01,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:01,303 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:40:01,305 INFO L158 Benchmark]: Toolchain (without parser) took 618.96ms. Allocated memory is still 107.0MB. Free memory was 73.9MB in the beginning and 71.8MB in the end (delta: 2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:40:01,306 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:40:01,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.23ms. Allocated memory is still 107.0MB. Free memory was 73.7MB in the beginning and 72.2MB in the end (delta: 1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:40:01,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.23ms. Allocated memory is still 107.0MB. Free memory was 73.7MB in the beginning and 72.2MB in the end (delta: 1.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF --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 e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:40:03,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:40:03,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:40:03,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:40:03,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:40:03,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:40:03,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:40:03,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:40:03,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:40:03,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:40:03,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:40:03,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:40:03,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:40:03,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:40:03,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:40:03,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:40:03,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:40:03,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:40:03,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:40:03,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:40:03,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:40:03,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:40:03,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:40:03,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:40:03,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:40:03,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:40:03,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:40:03,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:40:03,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:40:03,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:40:03,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:40:03,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:40:03,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:40:03,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:40:03,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:40:03,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:40:03,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:40:03,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:40:03,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:40:03,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:40:03,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:40:03,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:40:03,727 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:40:03,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:40:03,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:40:03,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:40:03,729 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:40:03,730 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:40:03,730 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:40:03,730 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:40:03,730 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:40:03,730 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:40:03,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:40:03,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:40:03,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:40:03,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:40:03,734 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:40:03,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:40:03,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:40:03,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:40:03,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:40:03,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:40:03,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:40:03,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:40:03,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:03,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:40:03,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:40:03,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:40:03,737 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:40:03,737 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:03,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:40:03,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:40:03,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:40:03,738 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e559d44f6ee539bed570b1939999945f6f48ca1506c283f526f35c026a08bf8f [2021-11-13 02:40:04,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:40:04,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:40:04,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:40:04,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:40:04,218 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:40:04,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-13 02:40:04,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/64f00797f/b9dbda2c7c314adeaf874404e51bac75/FLAGe02029a67 [2021-11-13 02:40:05,039 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:40:05,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c [2021-11-13 02:40:05,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/64f00797f/b9dbda2c7c314adeaf874404e51bac75/FLAGe02029a67 [2021-11-13 02:40:05,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/data/64f00797f/b9dbda2c7c314adeaf874404e51bac75 [2021-11-13 02:40:05,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:40:05,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:40:05,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:05,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:40:05,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:40:05,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:05" (1/1) ... [2021-11-13 02:40:05,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d272828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:05, skipping insertion in model container [2021-11-13 02:40:05,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:40:05" (1/1) ... [2021-11-13 02:40:05,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:40:05,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:05,825 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-13 02:40:05,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:05,884 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:40:05,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:06,102 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-13 02:40:06,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:06,123 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:40:06,275 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_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/sv-benchmarks/c/openssl/s3_srvr.blast.15.i.cil-2.c[75833,75846] [2021-11-13 02:40:06,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:06,303 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:40:06,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06 WrapperNode [2021-11-13 02:40:06,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:06,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:06,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:40:06,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:40:06,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:06,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:40:06,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:40:06,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:40:06,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:40:06,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:40:06,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:40:06,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:40:06,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (1/1) ... [2021-11-13 02:40:06,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:06,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:40:06,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:40:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:40:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:40:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:40:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:40:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:40:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:40:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:40:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:40:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:40:06,879 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 02:40:17,284 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-13 02:40:17,284 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-13 02:40:17,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:40:17,294 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:40:17,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:17 BoogieIcfgContainer [2021-11-13 02:40:17,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:40:17,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:40:17,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:40:17,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:40:17,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:40:05" (1/3) ... [2021-11-13 02:40:17,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37c56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:17, skipping insertion in model container [2021-11-13 02:40:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:06" (2/3) ... [2021-11-13 02:40:17,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37c56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:40:17, skipping insertion in model container [2021-11-13 02:40:17,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:40:17" (3/3) ... [2021-11-13 02:40:17,305 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.15.i.cil-2.c [2021-11-13 02:40:17,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:40:17,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:40:17,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:40:17,367 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 [2021-11-13 02:40:17,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:40:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 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) [2021-11-13 02:40:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 02:40:17,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:17,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:17,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash 983008807, now seen corresponding path program 1 times [2021-11-13 02:40:17,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:17,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628504568] [2021-11-13 02:40:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:17,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:17,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:17,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:17,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:40:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:17,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:17,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:18,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:18,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:18,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628504568] [2021-11-13 02:40:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628504568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:18,414 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:18,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:18,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681913720] [2021-11-13 02:40:18,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:18,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:18,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:18,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:18,455 INFO L87 Difference]: Start difference. First operand has 154 states, 152 states have (on average 1.7236842105263157) internal successors, (262), 153 states have internal predecessors, (262), 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 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:18,776 INFO L93 Difference]: Finished difference Result 578 states and 992 transitions. [2021-11-13 02:40:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-13 02:40:18,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:18,804 INFO L225 Difference]: With dead ends: 578 [2021-11-13 02:40:18,807 INFO L226 Difference]: Without dead ends: 395 [2021-11-13 02:40:18,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:18,815 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 390 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.16ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:18,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 667 Invalid, 109 Unknown, 0 Unchecked, 14.16ms Time], IncrementalHoareTripleChecker [39 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 187.93ms Time] [2021-11-13 02:40:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-13 02:40:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2021-11-13 02:40:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.532994923857868) internal successors, (604), 394 states have internal predecessors, (604), 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) [2021-11-13 02:40:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 604 transitions. [2021-11-13 02:40:18,895 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 604 transitions. Word has length 46 [2021-11-13 02:40:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:18,896 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 604 transitions. [2021-11-13 02:40:18,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:40:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 604 transitions. [2021-11-13 02:40:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-13 02:40:18,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:18,918 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:18,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:19,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:19,132 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1606020589, now seen corresponding path program 1 times [2021-11-13 02:40:19,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:19,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499402235] [2021-11-13 02:40:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:19,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:19,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:19,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:19,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:40:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:19,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:19,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:20,359 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:20,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499402235] [2021-11-13 02:40:20,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499402235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:20,359 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:20,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:20,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75372156] [2021-11-13 02:40:20,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:20,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:20,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:20,363 INFO L87 Difference]: Start difference. First operand 395 states and 604 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2021-11-13 02:40:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:20,787 INFO L93 Difference]: Finished difference Result 904 states and 1402 transitions. [2021-11-13 02:40:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 109 [2021-11-13 02:40:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:20,794 INFO L225 Difference]: With dead ends: 904 [2021-11-13 02:40:20,794 INFO L226 Difference]: Without dead ends: 647 [2021-11-13 02:40:20,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:20,799 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 299 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 353.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 386.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:20,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 721 Invalid, 116 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [36 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 386.17ms Time] [2021-11-13 02:40:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-11-13 02:40:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-11-13 02:40:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.5247678018575852) internal successors, (985), 646 states have internal predecessors, (985), 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) [2021-11-13 02:40:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 985 transitions. [2021-11-13 02:40:20,867 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 985 transitions. Word has length 109 [2021-11-13 02:40:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:20,869 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 985 transitions. [2021-11-13 02:40:20,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2021-11-13 02:40:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 985 transitions. [2021-11-13 02:40:20,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 02:40:20,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:20,882 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:20,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:21,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:21,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash 349080117, now seen corresponding path program 1 times [2021-11-13 02:40:21,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:21,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061402014] [2021-11-13 02:40:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:21,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:21,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:21,109 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:21,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:40:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:21,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:21,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:40:22,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 02:40:22,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:22,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061402014] [2021-11-13 02:40:22,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061402014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:22,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:22,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:40:22,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239560971] [2021-11-13 02:40:22,651 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:22,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:22,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:22,653 INFO L87 Difference]: Start difference. First operand 647 states and 985 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-13 02:40:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:23,238 INFO L93 Difference]: Finished difference Result 1280 states and 1961 transitions. [2021-11-13 02:40:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 175 [2021-11-13 02:40:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:23,245 INFO L225 Difference]: With dead ends: 1280 [2021-11-13 02:40:23,245 INFO L226 Difference]: Without dead ends: 771 [2021-11-13 02:40:23,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:23,249 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 142 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 524.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 549.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:23,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 579 Invalid, 47 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 549.89ms Time] [2021-11-13 02:40:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-11-13 02:40:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2021-11-13 02:40:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.518181818181818) internal successors, (1169), 770 states have internal predecessors, (1169), 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) [2021-11-13 02:40:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1169 transitions. [2021-11-13 02:40:23,281 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1169 transitions. Word has length 175 [2021-11-13 02:40:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:23,282 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 1169 transitions. [2021-11-13 02:40:23,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-11-13 02:40:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1169 transitions. [2021-11-13 02:40:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-13 02:40:23,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:23,288 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-13 02:40:23,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:23,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:23,504 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash -699698266, now seen corresponding path program 1 times [2021-11-13 02:40:23,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:23,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764018250] [2021-11-13 02:40:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:23,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:23,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:23,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:23,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:40:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:23,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:23,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-13 02:40:24,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-13 02:40:25,287 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:25,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764018250] [2021-11-13 02:40:25,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764018250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:25,287 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:25,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:25,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038268886] [2021-11-13 02:40:25,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:25,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:25,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:25,290 INFO L87 Difference]: Start difference. First operand 771 states and 1169 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2021-11-13 02:40:26,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:26,686 INFO L93 Difference]: Finished difference Result 1654 states and 2527 transitions. [2021-11-13 02:40:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 216 [2021-11-13 02:40:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:26,695 INFO L225 Difference]: With dead ends: 1654 [2021-11-13 02:40:26,695 INFO L226 Difference]: Without dead ends: 1021 [2021-11-13 02:40:26,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:26,700 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 295 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1286.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1341.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:26,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 724 Invalid, 110 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [32 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1341.62ms Time] [2021-11-13 02:40:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2021-11-13 02:40:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1021. [2021-11-13 02:40:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 1.5166666666666666) internal successors, (1547), 1020 states have internal predecessors, (1547), 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) [2021-11-13 02:40:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1547 transitions. [2021-11-13 02:40:26,753 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1547 transitions. Word has length 216 [2021-11-13 02:40:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:26,755 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1547 transitions. [2021-11-13 02:40:26,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2021-11-13 02:40:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1547 transitions. [2021-11-13 02:40:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-13 02:40:26,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:26,767 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:26,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:26,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:26,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:26,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2106120990, now seen corresponding path program 1 times [2021-11-13 02:40:26,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:26,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361235933] [2021-11-13 02:40:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:26,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:26,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:26,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:26,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:40:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:27,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:27,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-13 02:40:28,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-13 02:40:28,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:28,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361235933] [2021-11-13 02:40:28,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361235933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:28,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:28,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:40:28,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891533272] [2021-11-13 02:40:28,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:28,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:28,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:28,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:28,902 INFO L87 Difference]: Start difference. First operand 1021 states and 1547 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-11-13 02:40:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:29,670 INFO L93 Difference]: Finished difference Result 2027 states and 3083 transitions. [2021-11-13 02:40:29,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:29,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 300 [2021-11-13 02:40:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:29,679 INFO L225 Difference]: With dead ends: 2027 [2021-11-13 02:40:29,680 INFO L226 Difference]: Without dead ends: 1144 [2021-11-13 02:40:29,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:29,682 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 695.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 728.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:29,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 577 Invalid, 47 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 728.18ms Time] [2021-11-13 02:40:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-11-13 02:40:29,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2021-11-13 02:40:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.5126859142607174) internal successors, (1729), 1143 states have internal predecessors, (1729), 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) [2021-11-13 02:40:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1729 transitions. [2021-11-13 02:40:29,726 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1729 transitions. Word has length 300 [2021-11-13 02:40:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:29,726 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 1729 transitions. [2021-11-13 02:40:29,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-11-13 02:40:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1729 transitions. [2021-11-13 02:40:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-13 02:40:29,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:29,735 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:29,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:29,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:29,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1146342820, now seen corresponding path program 1 times [2021-11-13 02:40:29,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:29,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897861682] [2021-11-13 02:40:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:29,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:29,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:29,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:40:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:30,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:30,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-13 02:40:31,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-13 02:40:32,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:32,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897861682] [2021-11-13 02:40:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897861682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:32,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:32,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459695216] [2021-11-13 02:40:32,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:32,005 INFO L87 Difference]: Start difference. First operand 1144 states and 1729 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2021-11-13 02:40:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:32,782 INFO L93 Difference]: Finished difference Result 2400 states and 3646 transitions. [2021-11-13 02:40:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 339 [2021-11-13 02:40:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:32,793 INFO L225 Difference]: With dead ends: 2400 [2021-11-13 02:40:32,793 INFO L226 Difference]: Without dead ends: 1394 [2021-11-13 02:40:32,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:32,796 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 304 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 692.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 722.06ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:32,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 724 Invalid, 109 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [31 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 722.06ms Time] [2021-11-13 02:40:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-13 02:40:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2021-11-13 02:40:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 1.511127063890883) internal successors, (2105), 1393 states have internal predecessors, (2105), 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) [2021-11-13 02:40:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2105 transitions. [2021-11-13 02:40:32,849 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2105 transitions. Word has length 339 [2021-11-13 02:40:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:32,850 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 2105 transitions. [2021-11-13 02:40:32,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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) [2021-11-13 02:40:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2105 transitions. [2021-11-13 02:40:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-13 02:40:32,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:32,862 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:32,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:33,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:33,086 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:33,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1795384531, now seen corresponding path program 1 times [2021-11-13 02:40:33,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:33,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155329766] [2021-11-13 02:40:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:33,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:33,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:33,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:40:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:33,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:33,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-13 02:40:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-13 02:40:35,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:35,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155329766] [2021-11-13 02:40:35,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155329766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:35,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:35,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:40:35,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197359293] [2021-11-13 02:40:35,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:35,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:40:35,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:35,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:40:35,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:35,323 INFO L87 Difference]: Start difference. First operand 1394 states and 2105 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-13 02:40:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:36,052 INFO L93 Difference]: Finished difference Result 2774 states and 4200 transitions. [2021-11-13 02:40:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:40:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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 426 [2021-11-13 02:40:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:36,066 INFO L225 Difference]: With dead ends: 2774 [2021-11-13 02:40:36,067 INFO L226 Difference]: Without dead ends: 1518 [2021-11-13 02:40:36,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:40:36,070 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 655.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 678.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:36,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 577 Invalid, 48 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 678.63ms Time] [2021-11-13 02:40:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-11-13 02:40:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2021-11-13 02:40:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 1.5082399472643375) internal successors, (2288), 1517 states have internal predecessors, (2288), 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) [2021-11-13 02:40:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2288 transitions. [2021-11-13 02:40:36,130 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2288 transitions. Word has length 426 [2021-11-13 02:40:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:36,131 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 2288 transitions. [2021-11-13 02:40:36,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2021-11-13 02:40:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2288 transitions. [2021-11-13 02:40:36,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-13 02:40:36,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:36,154 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 02:40:36,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:36,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:36,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -483119247, now seen corresponding path program 1 times [2021-11-13 02:40:36,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:36,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149591648] [2021-11-13 02:40:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:36,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:36,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:36,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:36,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:40:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:37,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:40:37,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-11-13 02:40:38,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 1211 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-11-13 02:40:38,937 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:38,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149591648] [2021-11-13 02:40:38,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149591648] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:38,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:38,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:40:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532376173] [2021-11-13 02:40:38,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:38,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:40:38,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:40:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:38,941 INFO L87 Difference]: Start difference. First operand 1518 states and 2288 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2021-11-13 02:40:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:39,627 INFO L93 Difference]: Finished difference Result 3147 states and 4761 transitions. [2021-11-13 02:40:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:40:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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 470 [2021-11-13 02:40:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:39,642 INFO L225 Difference]: With dead ends: 3147 [2021-11-13 02:40:39,642 INFO L226 Difference]: Without dead ends: 1767 [2021-11-13 02:40:39,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:40:39,648 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 294 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 601.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 629.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:39,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 722 Invalid, 108 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [30 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 629.62ms Time] [2021-11-13 02:40:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-13 02:40:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-13 02:40:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.506228765571914) internal successors, (2660), 1766 states have internal predecessors, (2660), 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) [2021-11-13 02:40:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2660 transitions. [2021-11-13 02:40:39,715 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2660 transitions. Word has length 470 [2021-11-13 02:40:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:39,716 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2660 transitions. [2021-11-13 02:40:39,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2021-11-13 02:40:39,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2660 transitions. [2021-11-13 02:40:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-13 02:40:39,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:39,731 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:39,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:39,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:39,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1059985507, now seen corresponding path program 1 times [2021-11-13 02:40:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:39,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030441288] [2021-11-13 02:40:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:39,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:39,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:39,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:39,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:40:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:42,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 02:40:42,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:42,230 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 [2021-11-13 02:40:42,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-11-13 02:40:42,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:40:42,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 02:40:42,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-13 02:40:42,853 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-13 02:40:42,854 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 1289 treesize of output 1241 [2021-11-13 02:40:42,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 02:40:42,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:42,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-13 02:40:42,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-13 02:40:42,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 49 [2021-11-13 02:40:43,249 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-13 02:40:43,250 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 [2021-11-13 02:40:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:40:43,284 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 [2021-11-13 02:40:43,316 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 [2021-11-13 02:40:43,321 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 [2021-11-13 02:40:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2021-11-13 02:40:44,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:46,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-13 02:40:46,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 02:40:46,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-13 02:40:46,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-13 02:40:46,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-13 02:40:46,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-13 02:40:46,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-13 02:40:46,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:40:46,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-13 02:40:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2752 trivial. 0 not checked. [2021-11-13 02:40:46,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:46,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030441288] [2021-11-13 02:40:46,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030441288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:46,933 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:46,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:40:46,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119440748] [2021-11-13 02:40:46,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:46,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:46,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:46,937 INFO L87 Difference]: Start difference. First operand 1767 states and 2660 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2021-11-13 02:40:48,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:50,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:52,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:53,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:56,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:01,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:02,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:03,346 INFO L93 Difference]: Finished difference Result 3531 states and 5316 transitions. [2021-11-13 02:41:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:41:03,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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 553 [2021-11-13 02:41:03,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:03,359 INFO L225 Difference]: With dead ends: 3531 [2021-11-13 02:41:03,360 INFO L226 Difference]: Without dead ends: 1767 [2021-11-13 02:41:03,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1097 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:41:03,366 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15913.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 16247.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:03,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 862 Invalid, 228 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 2 Unknown, 59 Unchecked, 16247.31ms Time] [2021-11-13 02:41:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2021-11-13 02:41:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1767. [2021-11-13 02:41:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 1.5056625141562854) internal successors, (2659), 1766 states have internal predecessors, (2659), 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) [2021-11-13 02:41:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2659 transitions. [2021-11-13 02:41:03,437 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2659 transitions. Word has length 553 [2021-11-13 02:41:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:03,437 INFO L470 AbstractCegarLoop]: Abstraction has 1767 states and 2659 transitions. [2021-11-13 02:41:03,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 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) [2021-11-13 02:41:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2659 transitions. [2021-11-13 02:41:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-13 02:41:03,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:03,446 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:03,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:03,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:03,664 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1194022431, now seen corresponding path program 1 times [2021-11-13 02:41:03,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:03,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703935747] [2021-11-13 02:41:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:03,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:03,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:03,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:03,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:41:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:07,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:41:07,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:08,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:41:08,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:41:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:41:08,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:41:08,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:41:08,086 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-13 02:41:08,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-13 02:41:08,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:41:08,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:41:08,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 02:41:08,469 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-13 02:41:08,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-13 02:41:10,886 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-13 02:41:10,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-13 02:41:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1524 proven. 0 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2021-11-13 02:41:11,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1524 proven. 0 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2021-11-13 02:41:13,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:13,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703935747] [2021-11-13 02:41:13,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703935747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:13,234 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:13,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-13 02:41:13,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766987068] [2021-11-13 02:41:13,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:13,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:41:13,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:41:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:41:13,238 INFO L87 Difference]: Start difference. First operand 1767 states and 2659 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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) [2021-11-13 02:41:15,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:19,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:20,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:27,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:41,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:48,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:55,449 INFO L93 Difference]: Finished difference Result 7750 states and 11707 transitions. [2021-11-13 02:41:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:41:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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 553 [2021-11-13 02:41:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:55,491 INFO L225 Difference]: With dead ends: 7750 [2021-11-13 02:41:55,491 INFO L226 Difference]: Without dead ends: 5993 [2021-11-13 02:41:55,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1098 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:41:55,499 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 363 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 86 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40740.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41843.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:55,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 914 Invalid, 859 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [86 Valid, 770 Invalid, 3 Unknown, 0 Unchecked, 41843.42ms Time] [2021-11-13 02:41:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-11-13 02:41:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 2364. [2021-11-13 02:41:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 1.585272958104105) internal successors, (3746), 2363 states have internal predecessors, (3746), 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) [2021-11-13 02:41:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3746 transitions. [2021-11-13 02:41:55,672 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3746 transitions. Word has length 553 [2021-11-13 02:41:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:55,673 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3746 transitions. [2021-11-13 02:41:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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) [2021-11-13 02:41:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3746 transitions. [2021-11-13 02:41:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-13 02:41:55,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:55,683 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:55,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:55,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:55,897 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1439959711, now seen corresponding path program 1 times [2021-11-13 02:41:55,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:55,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320522424] [2021-11-13 02:41:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:55,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:55,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:55,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46ca7eb1-5cbc-49fc-a4c8-c5959641a751/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:42:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:06,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-13 02:42:06,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:59,108 WARN L227 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 66 DAG size of output: 15 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 02:43:59,109 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-13 02:43:59,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 4167 treesize of output 4178 [2021-11-13 02:43:59,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 4162 treesize of output 4126 [2021-11-13 02:43:59,272 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:43:59,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78488 [2021-11-13 02:43:59,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:43:59,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214863 [2021-11-13 02:43:59,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:43:59,334 INFO L190 IndexEqualityManager]: detected not equals via solver