./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d0954289a294fb2be404f98afcefa652a2fbf60d586d07e7d68c419183f4ff07 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:08,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:08,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:08,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:08,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:08,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:08,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:08,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:08,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:08,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:08,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:08,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:08,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:08,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:08,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:08,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:08,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:08,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:08,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:08,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:08,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:08,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:08,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:08,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:08,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:08,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:08,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:08,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:08,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:08,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:08,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:08,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:08,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:08,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:08,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:08,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:08,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:08,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:08,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:08,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:08,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:08,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:49:08,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:08,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:08,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:08,368 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:08,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:08,369 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:08,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:49:08,369 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:08,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:08,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:49:08,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:49:08,371 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:08,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:49:08,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:49:08,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:49:08,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:08,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:49:08,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:08,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:08,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:08,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:08,375 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:08,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:08,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:08,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:08,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:08,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:08,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:08,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:08,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:08,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:08,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:49:08,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:49:08,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:08,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:08,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:08,379 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0954289a294fb2be404f98afcefa652a2fbf60d586d07e7d68c419183f4ff07 [2021-11-07 01:49:08,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:08,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:08,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:08,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:08,831 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:08,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i [2021-11-07 01:49:08,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/208473dd9/89d88adfd48f421fa30a85e47854975d/FLAG075e9bb24 [2021-11-07 01:49:09,911 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:09,912 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i [2021-11-07 01:49:09,964 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/208473dd9/89d88adfd48f421fa30a85e47854975d/FLAG075e9bb24 [2021-11-07 01:49:10,346 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/208473dd9/89d88adfd48f421fa30a85e47854975d [2021-11-07 01:49:10,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:10,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:10,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:10,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:10,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:10,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:10" (1/1) ... [2021-11-07 01:49:10,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2cd0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:10, skipping insertion in model container [2021-11-07 01:49:10,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:10" (1/1) ... [2021-11-07 01:49:10,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:10,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:11,222 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3507] [2021-11-07 01:49:11,225 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3509-3510] [2021-11-07 01:49:11,228 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3511-3513] [2021-11-07 01:49:11,229 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3514-3515] [2021-11-07 01:49:11,229 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3516] [2021-11-07 01:49:11,233 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3522-3523] [2021-11-07 01:49:11,234 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3524] [2021-11-07 01:49:11,234 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3527] [2021-11-07 01:49:11,248 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3940] [2021-11-07 01:49:11,249 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3941] [2021-11-07 01:49:11,249 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3942] [2021-11-07 01:49:11,250 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3943] [2021-11-07 01:49:11,250 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3944] [2021-11-07 01:49:11,251 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3945] [2021-11-07 01:49:11,526 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i[130795,130808] [2021-11-07 01:49:12,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:12,105 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:49:12,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@711955eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:12, skipping insertion in model container [2021-11-07 01:49:12,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:12,107 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:49:12,110 INFO L168 Benchmark]: Toolchain (without parser) took 1756.86 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 71.8 MB in the beginning and 92.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:12,111 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 46.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:49:12,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1753.49 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 71.6 MB in the beginning and 92.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:12,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 75.3 MB in the end (delta: 46.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1753.49 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 71.6 MB in the beginning and 92.9 MB in the end (delta: -21.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4648]: 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d0954289a294fb2be404f98afcefa652a2fbf60d586d07e7d68c419183f4ff07 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:14,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:14,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:14,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:14,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:14,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:14,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:14,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:14,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:14,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:14,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:14,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:14,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:14,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:14,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:14,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:14,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:14,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:14,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:14,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:14,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:15,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:15,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:15,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:15,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:15,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:15,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:15,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:15,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:15,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:15,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:15,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:15,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:15,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:15,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:15,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:15,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:15,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:15,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:15,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:15,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:15,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:49:15,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:15,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:15,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:15,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:15,105 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:15,105 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:15,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:15,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:15,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:15,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:15,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:15,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:15,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:15,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:15,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:15,108 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:49:15,108 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:49:15,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:15,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:15,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:15,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:15,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:49:15,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:15,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:15,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:15,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:15,111 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0954289a294fb2be404f98afcefa652a2fbf60d586d07e7d68c419183f4ff07 [2021-11-07 01:49:15,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:15,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:15,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:15,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:15,645 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:15,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i [2021-11-07 01:49:15,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/5b75c1848/c1a7b8dface24b33838f7c20f0e8a483/FLAG1b68bc28b [2021-11-07 01:49:16,758 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:16,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i [2021-11-07 01:49:16,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/5b75c1848/c1a7b8dface24b33838f7c20f0e8a483/FLAG1b68bc28b [2021-11-07 01:49:17,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/data/5b75c1848/c1a7b8dface24b33838f7c20f0e8a483 [2021-11-07 01:49:17,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:17,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:17,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:17,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:17,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:17,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:17" (1/1) ... [2021-11-07 01:49:17,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5590f309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:17, skipping insertion in model container [2021-11-07 01:49:17,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:17" (1/1) ... [2021-11-07 01:49:17,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:17,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:18,007 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3507] [2021-11-07 01:49:18,010 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3509-3510] [2021-11-07 01:49:18,010 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3511-3513] [2021-11-07 01:49:18,011 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3514-3515] [2021-11-07 01:49:18,011 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3516] [2021-11-07 01:49:18,013 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3522-3523] [2021-11-07 01:49:18,014 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3524] [2021-11-07 01:49:18,015 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3527] [2021-11-07 01:49:18,044 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3940] [2021-11-07 01:49:18,045 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3941] [2021-11-07 01:49:18,046 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3942] [2021-11-07 01:49:18,046 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3943] [2021-11-07 01:49:18,047 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3944] [2021-11-07 01:49:18,047 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3945] [2021-11-07 01:49:18,359 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i[130795,130808] [2021-11-07 01:49:18,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,051 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:49:19,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:19,233 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3507] [2021-11-07 01:49:19,234 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3509-3510] [2021-11-07 01:49:19,234 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3511-3513] [2021-11-07 01:49:19,235 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3514-3515] [2021-11-07 01:49:19,235 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3516] [2021-11-07 01:49:19,236 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3522-3523] [2021-11-07 01:49:19,236 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3524] [2021-11-07 01:49:19,237 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3527] [2021-11-07 01:49:19,248 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3940] [2021-11-07 01:49:19,249 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3941] [2021-11-07 01:49:19,249 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3942] [2021-11-07 01:49:19,250 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3943] [2021-11-07 01:49:19,250 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3944] [2021-11-07 01:49:19,251 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3945] [2021-11-07 01:49:19,272 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i[130795,130808] [2021-11-07 01:49:19,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,419 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:49:19,564 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name writepages at C: (*writepages)(struct address_space___0 * , struct writeback_control * ) [3507] [2021-11-07 01:49:19,564 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name readpages at C: (*readpages)(struct file___0 *filp , struct address_space___0 *mapping , struct list_head *pages , unsigned int nr_pages ) [3509-3510] [2021-11-07 01:49:19,564 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_begin at C: (*write_begin)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int flags , struct page **pagep , void **fsdata ) [3511-3513] [2021-11-07 01:49:19,565 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name write_end at C: (*write_end)(struct file___0 * , struct address_space___0 *mapping , loff_t pos , unsigned int len , unsigned int copied , struct page *page , void *fsdata ) [3514-3515] [2021-11-07 01:49:19,565 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name bmap at C: (*bmap)(struct address_space___0 * , sector_t ) [3516] [2021-11-07 01:49:19,566 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name get_xip_mem at C: (*get_xip_mem)(struct address_space___0 * , unsigned long , int , void ** , unsigned long * ) [3522-3523] [2021-11-07 01:49:19,566 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name migratepage at C: (*migratepage)(struct address_space___0 * , struct page * , struct page * ) [3524] [2021-11-07 01:49:19,566 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name error_remove_page at C: (*error_remove_page)(struct address_space___0 * , struct page * ) [3527] [2021-11-07 01:49:19,579 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name carrier_raised at C: (*carrier_raised)(struct tty_port___0 *port ) [3940] [2021-11-07 01:49:19,579 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name dtr_rts at C: (*dtr_rts)(struct tty_port___0 *port , int raise ) [3941] [2021-11-07 01:49:19,579 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name shutdown at C: (*shutdown)(struct tty_port___0 *port ) [3942] [2021-11-07 01:49:19,580 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name drop at C: (*drop)(struct tty_port___0 *port ) [3943] [2021-11-07 01:49:19,580 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name activate at C: (*activate)(struct tty_port___0 *port , struct tty_struct___0 *tty ) [3944] [2021-11-07 01:49:19,581 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name destruct at C: (*destruct)(struct tty_port___0 *port ) [3945] [2021-11-07 01:49:19,635 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_0dc5fa4b-530d-46bb-b141-d38c44f1e864/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i[130795,130808] [2021-11-07 01:49:19,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:19,912 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:49:19,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19 WrapperNode [2021-11-07 01:49:19,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:19,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:19,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:49:19,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:49:19,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:19,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:20,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:49:20,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:49:20,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:49:20,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:49:20,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:49:20,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:49:20,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:49:20,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (1/1) ... [2021-11-07 01:49:20,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:49:20,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:49:20,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:49:20,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:49:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:49:20,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:49:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:49:20,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:49:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:49:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:49:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:49:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:49:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:49:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-07 01:49:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:49:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:49:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:49:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:49:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:49:20,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:49:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:49:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:49:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:49:20,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:49:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:49:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:49:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:49:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:49:20,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:49:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:49:21,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:49:21,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:50:22,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:50:22,033 INFO L299 CfgBuilder]: Removed 1401 assume(true) statements. [2021-11-07 01:50:22,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:22 BoogieIcfgContainer [2021-11-07 01:50:22,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:50:22,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:50:22,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:50:22,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:50:22,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:49:17" (1/3) ... [2021-11-07 01:50:22,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21433e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:22, skipping insertion in model container [2021-11-07 01:50:22,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:19" (2/3) ... [2021-11-07 01:50:22,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21433e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:50:22, skipping insertion in model container [2021-11-07 01:50:22,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:50:22" (3/3) ... [2021-11-07 01:50:22,050 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point.cil.out.i [2021-11-07 01:50:22,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:50:22,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 01:50:22,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:50:22,143 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:50:22,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 01:50:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 1817 states, 1805 states have (on average 1.5501385041551246) internal successors, (2798), 1816 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 01:50:22,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:22,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:22,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:50:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash 666057958, now seen corresponding path program 1 times [2021-11-07 01:50:22,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:22,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479552717] [2021-11-07 01:50:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:22,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:22,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:22,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:50:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:24,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:25,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:25,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479552717] [2021-11-07 01:50:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479552717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:25,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:25,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:50:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739802352] [2021-11-07 01:50:25,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:25,263 INFO L87 Difference]: Start difference. First operand has 1817 states, 1805 states have (on average 1.5501385041551246) internal successors, (2798), 1816 states have internal predecessors, (2798), 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 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:30,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:30,348 INFO L93 Difference]: Finished difference Result 3482 states and 5201 transitions. [2021-11-07 01:50:30,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:50:30,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 31 [2021-11-07 01:50:30,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:30,393 INFO L225 Difference]: With dead ends: 3482 [2021-11-07 01:50:30,393 INFO L226 Difference]: Without dead ends: 1644 [2021-11-07 01:50:30,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-11-07 01:50:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 890. [2021-11-07 01:50:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 879 states have (on average 1.3902161547212741) internal successors, (1222), 889 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1222 transitions. [2021-11-07 01:50:30,529 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1222 transitions. Word has length 31 [2021-11-07 01:50:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:30,530 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1222 transitions. [2021-11-07 01:50:30,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1222 transitions. [2021-11-07 01:50:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:50:30,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:30,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:30,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:30,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:30,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:50:30,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1572646806, now seen corresponding path program 1 times [2021-11-07 01:50:30,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:30,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666089796] [2021-11-07 01:50:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:30,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:30,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:30,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:50:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:32,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:50:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:32,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:33,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:33,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666089796] [2021-11-07 01:50:33,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666089796] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:33,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:33,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:50:33,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688956620] [2021-11-07 01:50:33,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:50:33,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:50:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:33,051 INFO L87 Difference]: Start difference. First operand 890 states and 1222 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:42,842 INFO L93 Difference]: Finished difference Result 1793 states and 2471 transitions. [2021-11-07 01:50:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:50:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-07 01:50:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:42,850 INFO L225 Difference]: With dead ends: 1793 [2021-11-07 01:50:42,851 INFO L226 Difference]: Without dead ends: 931 [2021-11-07 01:50:42,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-07 01:50:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2021-11-07 01:50:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 920 states have (on average 1.391304347826087) internal successors, (1280), 930 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1280 transitions. [2021-11-07 01:50:42,905 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1280 transitions. Word has length 33 [2021-11-07 01:50:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:42,905 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1280 transitions. [2021-11-07 01:50:42,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1280 transitions. [2021-11-07 01:50:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:50:42,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:42,916 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:42,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:43,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:43,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:50:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash 516484420, now seen corresponding path program 1 times [2021-11-07 01:50:43,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:43,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786884251] [2021-11-07 01:50:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:43,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:43,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:43,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:43,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:50:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:44,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:50:44,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:45,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:46,101 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:46,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786884251] [2021-11-07 01:50:46,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786884251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:46,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:46,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:50:46,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551870876] [2021-11-07 01:50:46,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:50:46,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:50:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:46,105 INFO L87 Difference]: Start difference. First operand 931 states and 1280 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:49,096 INFO L93 Difference]: Finished difference Result 2719 states and 3752 transitions. [2021-11-07 01:50:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:50:49,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-11-07 01:50:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:49,110 INFO L225 Difference]: With dead ends: 2719 [2021-11-07 01:50:49,110 INFO L226 Difference]: Without dead ends: 1802 [2021-11-07 01:50:49,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-07 01:50:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 927. [2021-11-07 01:50:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 916 states have (on average 1.388646288209607) internal successors, (1272), 926 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1272 transitions. [2021-11-07 01:50:49,159 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1272 transitions. Word has length 54 [2021-11-07 01:50:49,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:49,160 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1272 transitions. [2021-11-07 01:50:49,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1272 transitions. [2021-11-07 01:50:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:50:49,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:49,164 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:49,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:49,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:49,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:50:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 822335382, now seen corresponding path program 1 times [2021-11-07 01:50:49,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:49,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535595008] [2021-11-07 01:50:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:49,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:49,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:49,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:50:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:50,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:50:50,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:51,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:52,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:52,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535595008] [2021-11-07 01:50:52,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535595008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:52,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:52,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:50:52,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782673198] [2021-11-07 01:50:52,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:50:52,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:50:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:50:52,209 INFO L87 Difference]: Start difference. First operand 927 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:05,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:05,338 INFO L93 Difference]: Finished difference Result 2001 states and 2812 transitions. [2021-11-07 01:51:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:05,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 01:51:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:05,352 INFO L225 Difference]: With dead ends: 2001 [2021-11-07 01:51:05,352 INFO L226 Difference]: Without dead ends: 1102 [2021-11-07 01:51:05,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-07 01:51:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2021-11-07 01:51:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1091 states have (on average 1.4005499541704858) internal successors, (1528), 1101 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1528 transitions. [2021-11-07 01:51:05,407 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1528 transitions. Word has length 60 [2021-11-07 01:51:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:05,410 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1528 transitions. [2021-11-07 01:51:05,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1528 transitions. [2021-11-07 01:51:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:51:05,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:05,413 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:05,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:05,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:05,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:51:05,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:05,631 INFO L85 PathProgramCache]: Analyzing trace with hash -607684, now seen corresponding path program 1 times [2021-11-07 01:51:05,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:05,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868849837] [2021-11-07 01:51:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:05,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:05,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:05,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:05,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:51:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:07,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:07,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:51:07,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:51:07,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:07,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868849837] [2021-11-07 01:51:07,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868849837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:07,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:07,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:51:07,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234756886] [2021-11-07 01:51:07,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:51:07,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:51:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:51:07,726 INFO L87 Difference]: Start difference. First operand 1102 states and 1528 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:16,709 INFO L93 Difference]: Finished difference Result 2180 states and 3032 transitions. [2021-11-07 01:51:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 01:51:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:16,719 INFO L225 Difference]: With dead ends: 2180 [2021-11-07 01:51:16,720 INFO L226 Difference]: Without dead ends: 1106 [2021-11-07 01:51:16,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:51:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-07 01:51:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2021-11-07 01:51:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1095 states have (on average 1.3990867579908677) internal successors, (1532), 1105 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1532 transitions. [2021-11-07 01:51:16,765 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1532 transitions. Word has length 64 [2021-11-07 01:51:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:16,766 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1532 transitions. [2021-11-07 01:51:16,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1532 transitions. [2021-11-07 01:51:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 01:51:16,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:16,768 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:16,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:16,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:16,981 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:51:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -548102, now seen corresponding path program 1 times [2021-11-07 01:51:16,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:16,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327635950] [2021-11-07 01:51:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:16,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:16,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:16,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:16,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:51:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:18,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:51:18,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:24,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:29,335 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:29,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327635950] [2021-11-07 01:51:29,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327635950] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:51:29,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:51:29,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-07 01:51:29,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247057364] [2021-11-07 01:51:29,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:51:29,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:51:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:51:29,338 INFO L87 Difference]: Start difference. First operand 1106 states and 1532 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:01,563 INFO L93 Difference]: Finished difference Result 19378 states and 27717 transitions. [2021-11-07 01:53:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 01:53:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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 64 [2021-11-07 01:53:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:01,706 INFO L225 Difference]: With dead ends: 19378 [2021-11-07 01:53:01,707 INFO L226 Difference]: Without dead ends: 19362 [2021-11-07 01:53:01,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=875, Invalid=2785, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 01:53:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19362 states. [2021-11-07 01:53:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19362 to 2125. [2021-11-07 01:53:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2114 states have (on average 1.403500473036897) internal successors, (2967), 2124 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 2967 transitions. [2021-11-07 01:53:02,067 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 2967 transitions. Word has length 64 [2021-11-07 01:53:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:02,068 INFO L470 AbstractCegarLoop]: Abstraction has 2125 states and 2967 transitions. [2021-11-07 01:53:02,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 2967 transitions. [2021-11-07 01:53:02,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:53:02,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:02,071 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:02,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:02,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:02,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:53:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1209962787, now seen corresponding path program 1 times [2021-11-07 01:53:02,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:02,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020178328] [2021-11-07 01:53:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:02,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:02,301 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:02,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:53:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:03,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:53:03,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:53:11,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:53:16,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:16,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020178328] [2021-11-07 01:53:16,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020178328] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:53:16,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:53:16,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-07 01:53:16,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102384544] [2021-11-07 01:53:16,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:53:16,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:53:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:53:16,432 INFO L87 Difference]: Start difference. First operand 2125 states and 2967 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:42,884 INFO L93 Difference]: Finished difference Result 36193 states and 51840 transitions. [2021-11-07 01:54:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 01:54:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 01:54:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:43,001 INFO L225 Difference]: With dead ends: 36193 [2021-11-07 01:54:43,001 INFO L226 Difference]: Without dead ends: 36177 [2021-11-07 01:54:43,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=875, Invalid=2785, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 01:54:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36177 states. [2021-11-07 01:54:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36177 to 3101. [2021-11-07 01:54:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3090 states have (on average 1.4051779935275082) internal successors, (4342), 3100 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 4342 transitions. [2021-11-07 01:54:43,859 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 4342 transitions. Word has length 79 [2021-11-07 01:54:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 3101 states and 4342 transitions. [2021-11-07 01:54:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 4342 transitions. [2021-11-07 01:54:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:54:43,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:43,864 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:43,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:44,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:44,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:54:44,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash 906309742, now seen corresponding path program 1 times [2021-11-07 01:54:44,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:44,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031424110] [2021-11-07 01:54:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:44,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:44,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:44,080 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:44,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:54:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:45,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:54:45,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:47,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:54:47,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:54:49,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:49,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031424110] [2021-11-07 01:54:49,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031424110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:49,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:49,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-07 01:54:49,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800210635] [2021-11-07 01:54:49,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:54:49,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:54:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:54:49,101 INFO L87 Difference]: Start difference. First operand 3101 states and 4342 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:45,532 INFO L93 Difference]: Finished difference Result 19454 states and 27406 transitions. [2021-11-07 01:59:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:59:45,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:59:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:45,585 INFO L225 Difference]: With dead ends: 19454 [2021-11-07 01:59:45,585 INFO L226 Difference]: Without dead ends: 19438 [2021-11-07 01:59:45,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:59:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19438 states. [2021-11-07 01:59:46,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19438 to 4109. [2021-11-07 01:59:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4098 states have (on average 1.4050756466569059) internal successors, (5758), 4108 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5758 transitions. [2021-11-07 01:59:46,276 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5758 transitions. Word has length 82 [2021-11-07 01:59:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:46,276 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5758 transitions. [2021-11-07 01:59:46,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5758 transitions. [2021-11-07 01:59:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:59:46,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:46,282 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:46,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:59:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:46,505 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:59:46,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:46,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1346059703, now seen corresponding path program 1 times [2021-11-07 01:59:46,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:46,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876179059] [2021-11-07 01:59:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:46,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:46,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:46,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:59:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:48,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:59:48,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:59:56,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:00:00,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:00,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876179059] [2021-11-07 02:00:00,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876179059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:00,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601978376] [2021-11-07 02:00:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:00,966 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:00,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:00,968 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:00,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:00:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:03,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:00:03,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:00:09,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:00:12,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1601978376] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:12,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135089988] [2021-11-07 02:00:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:12,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:12,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:12,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 02:00:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:13,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:00:13,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:00:19,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 02:00:22,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135089988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:22,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:00:22,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 7, 10, 7] total 21 [2021-11-07 02:00:22,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211258941] [2021-11-07 02:00:22,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 02:00:22,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:22,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 02:00:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-07 02:00:22,191 INFO L87 Difference]: Start difference. First operand 4109 states and 5758 transitions. Second operand has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:39,061 INFO L93 Difference]: Finished difference Result 44704 states and 63990 transitions. [2021-11-07 02:02:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 02:02:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 02:02:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:39,148 INFO L225 Difference]: With dead ends: 44704 [2021-11-07 02:02:39,149 INFO L226 Difference]: Without dead ends: 44688 [2021-11-07 02:02:39,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=1313, Invalid=4693, Unknown=0, NotChecked=0, Total=6006 [2021-11-07 02:02:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44688 states. [2021-11-07 02:02:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44688 to 8090. [2021-11-07 02:02:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8079 states have (on average 1.4072286174031439) internal successors, (11369), 8089 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 11369 transitions. [2021-11-07 02:02:40,751 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 11369 transitions. Word has length 86 [2021-11-07 02:02:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:40,751 INFO L470 AbstractCegarLoop]: Abstraction has 8090 states and 11369 transitions. [2021-11-07 02:02:40,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.0) internal successors, (147), 21 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 11369 transitions. [2021-11-07 02:02:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 02:02:40,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:40,759 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:40,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:40,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-07 02:02:41,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:41,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:41,385 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 02:02:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1534045030, now seen corresponding path program 1 times [2021-11-07 02:02:41,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:41,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640354099] [2021-11-07 02:02:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:41,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:41,389 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:41,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc5fa4b-530d-46bb-b141-d38c44f1e864/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:02:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:43,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:02:43,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:02:44,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 02:02:45,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:45,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640354099] [2021-11-07 02:02:45,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640354099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:45,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:02:45,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:02:45,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636125610] [2021-11-07 02:02:45,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:45,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:02:45,145 INFO L87 Difference]: Start difference. First operand 8090 states and 11369 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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)