./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.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_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/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_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/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_d013ced9-c573-4780-b74e-b195a4791790/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 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:51,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:51,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:51,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:51,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:51,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:51,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:51,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:51,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:51,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:51,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:51,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:51,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:51,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:51,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:51,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:51,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:51,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:51,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:51,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:51,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:51,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:51,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:51,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:51,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:51,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:51,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:51,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:51,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:51,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:51,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:51,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:51,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:51,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:51,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:51,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:51,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:51,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:51,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:51,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:51,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:51,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:12:51,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:51,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:51,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:51,496 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:51,496 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:51,496 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:51,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:12:51,497 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:51,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:51,504 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:12:51,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:12:51,510 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:51,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:12:51,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:12:51,511 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:12:51,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:51,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:12:51,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:51,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:51,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:51,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:51,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:51,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:51,513 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:51,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:51,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:51,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:51,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:51,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:51,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:51,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:51,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:12:51,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:12:51,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:51,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:51,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:51,519 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_d013ced9-c573-4780-b74e-b195a4791790/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-11-07 01:12:51,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:51,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:51,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:51,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:51,867 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:51,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 01:12:51,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/13782c7e8/e2f1aa8b4d8a40989c46e6ceb50a805e/FLAGda77b1f49 [2021-11-07 01:12:52,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:52,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 01:12:52,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/13782c7e8/e2f1aa8b4d8a40989c46e6ceb50a805e/FLAGda77b1f49 [2021-11-07 01:12:53,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/13782c7e8/e2f1aa8b4d8a40989c46e6ceb50a805e [2021-11-07 01:12:53,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:53,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:53,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:53,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:53,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:53,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:53" (1/1) ... [2021-11-07 01:12:53,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517fddb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:53, skipping insertion in model container [2021-11-07 01:12:53,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:53" (1/1) ... [2021-11-07 01:12:53,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:53,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:12:54,138 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,457 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_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-07 01:12:54,630 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,636 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,641 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,644 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,646 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,648 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,674 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,674 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,682 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,688 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,688 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,694 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,695 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,699 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,699 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,705 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,705 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,723 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,724 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,744 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,747 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,765 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,765 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,771 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,772 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,777 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,777 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,781 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,788 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,793 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,802 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,819 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,883 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,901 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,940 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,942 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,942 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,943 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,943 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,945 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,946 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,951 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,952 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:54,953 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:12:55,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:12:55,165 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 01:12:55,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d670b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:55, skipping insertion in model container [2021-11-07 01:12:55,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:55,166 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:12:55,170 INFO L168 Benchmark]: Toolchain (without parser) took 1832.09 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 65.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:55,171 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 61.4 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:12:55,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1828.92 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 65.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:12:55,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 61.4 MB in the end (delta: 53.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1828.92 ms. Allocated memory is still 104.9 MB. Free memory was 78.8 MB in the beginning and 65.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 59.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3399]: 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_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/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_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/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_d013ced9-c573-4780-b74e-b195a4791790/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 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:12:57,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:12:57,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:12:57,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:12:57,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:12:57,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:12:57,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:12:57,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:12:57,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:12:57,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:12:57,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:12:57,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:12:57,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:12:57,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:12:57,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:12:57,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:12:57,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:12:57,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:12:57,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:12:57,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:12:57,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:12:57,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:12:57,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:12:57,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:12:57,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:12:57,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:12:57,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:12:57,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:12:57,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:12:57,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:12:57,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:12:57,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:12:57,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:12:57,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:12:57,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:12:57,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:12:57,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:12:57,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:12:57,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:12:57,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:12:57,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:12:57,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:12:57,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:12:57,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:12:57,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:12:57,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:12:57,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:12:57,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:12:57,625 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:12:57,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:12:57,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:12:57,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:12:57,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:12:57,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:12:57,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:12:57,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:12:57,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:12:57,630 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:12:57,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:12:57,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:12:57,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:12:57,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:12:57,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:12:57,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:12:57,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:12:57,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:12:57,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:12:57,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:12:57,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:12:57,633 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:12:57,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:12:57,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:12:57,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:12:57,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:12:57,634 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_d013ced9-c573-4780-b74e-b195a4791790/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-11-07 01:12:58,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:12:58,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:12:58,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:12:58,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:12:58,088 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:12:58,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 01:12:58,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/490580218/44529e78bfe84a399abb4a6cb148b0c6/FLAGb393e2c26 [2021-11-07 01:12:59,203 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:12:59,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 01:12:59,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/490580218/44529e78bfe84a399abb4a6cb148b0c6/FLAGb393e2c26 [2021-11-07 01:12:59,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/data/490580218/44529e78bfe84a399abb4a6cb148b0c6 [2021-11-07 01:12:59,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:12:59,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:12:59,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:12:59,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:12:59,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:12:59,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:59" (1/1) ... [2021-11-07 01:12:59,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3bf9dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:12:59, skipping insertion in model container [2021-11-07 01:12:59,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:12:59" (1/1) ... [2021-11-07 01:12:59,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:12:59,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:00,941 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_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-07 01:13:01,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:01,599 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:13:01,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:01,841 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_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-07 01:13:02,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:02,114 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:13:02,278 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_d013ced9-c573-4780-b74e-b195a4791790/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-07 01:13:02,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:02,785 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:13:02,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02 WrapperNode [2021-11-07 01:13:02,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:02,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:02,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:13:02,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:13:02,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:02,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:04,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:04,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:13:04,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:13:04,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:13:04,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:04,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:04,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:04,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:06,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:06,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:06,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:06,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:13:06,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:13:06,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:13:06,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:13:06,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (1/1) ... [2021-11-07 01:13:06,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:06,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:06,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:13:06,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:13:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:13:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:13:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 01:13:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:13:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:13:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:13:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:13:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:13:06,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:13:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:54,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:20:54,755 INFO L299 CfgBuilder]: Removed 8359 assume(true) statements. [2021-11-07 01:20:54,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:54 BoogieIcfgContainer [2021-11-07 01:20:54,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:20:54,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:20:54,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:20:54,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:20:54,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:12:59" (1/3) ... [2021-11-07 01:20:54,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e0e209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:54, skipping insertion in model container [2021-11-07 01:20:54,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:02" (2/3) ... [2021-11-07 01:20:54,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e0e209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:54, skipping insertion in model container [2021-11-07 01:20:54,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:54" (3/3) ... [2021-11-07 01:20:54,779 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-07 01:20:54,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:20:54,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 01:20:54,895 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:20:54,904 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 01:20:54,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 01:20:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 10332 states, 10320 states have (on average 1.5155038759689923) internal successors, (15640), 10331 states have internal predecessors, (15640), 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 01:20:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:20:55,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:55,080 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] [2021-11-07 01:20:55,081 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 01:20:55,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1946913747, now seen corresponding path program 1 times [2021-11-07 01:20:55,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:55,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095381669] [2021-11-07 01:20:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:55,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:55,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:55,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:21:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:06,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:21:06,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:06,703 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 01:21:06,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:06,854 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 01:21:06,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:06,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095381669] [2021-11-07 01:21:06,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095381669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:06,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:06,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:21:06,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444063503] [2021-11-07 01:21:06,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:06,903 INFO L87 Difference]: Start difference. First operand has 10332 states, 10320 states have (on average 1.5155038759689923) internal successors, (15640), 10331 states have internal predecessors, (15640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 01:21:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:10,759 INFO L93 Difference]: Finished difference Result 30757 states and 45499 transitions. [2021-11-07 01:21:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:10,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 21 [2021-11-07 01:21:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:10,921 INFO L225 Difference]: With dead ends: 30757 [2021-11-07 01:21:10,921 INFO L226 Difference]: Without dead ends: 20411 [2021-11-07 01:21:10,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20411 states. [2021-11-07 01:21:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20411 to 20411. [2021-11-07 01:21:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20411 states, 20400 states have (on average 1.425) internal successors, (29070), 20410 states have internal predecessors, (29070), 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 01:21:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20411 states to 20411 states and 29070 transitions. [2021-11-07 01:21:12,024 INFO L78 Accepts]: Start accepts. Automaton has 20411 states and 29070 transitions. Word has length 21 [2021-11-07 01:21:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 20411 states and 29070 transitions. [2021-11-07 01:21:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 01:21:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 20411 states and 29070 transitions. [2021-11-07 01:21:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:21:12,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:12,040 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:12,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:12,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,254 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:21:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1496146930, now seen corresponding path program 1 times [2021-11-07 01:21:12,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:12,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618857724] [2021-11-07 01:21:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:12,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:12,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:12,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:21:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:23,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:23,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:23,887 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 01:21:23,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:24,273 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 01:21:24,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:24,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618857724] [2021-11-07 01:21:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618857724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:24,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:24,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:24,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398973322] [2021-11-07 01:21:24,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:24,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:24,278 INFO L87 Difference]: Start difference. First operand 20411 states and 29070 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 01:21:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:25,856 INFO L93 Difference]: Finished difference Result 47547 states and 67736 transitions. [2021-11-07 01:21:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-07 01:21:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:25,980 INFO L225 Difference]: With dead ends: 47547 [2021-11-07 01:21:25,981 INFO L226 Difference]: Without dead ends: 27164 [2021-11-07 01:21:26,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27164 states. [2021-11-07 01:21:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27164 to 20411. [2021-11-07 01:21:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20411 states, 20400 states have (on average 1.424950980392157) internal successors, (29069), 20410 states have internal predecessors, (29069), 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 01:21:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20411 states to 20411 states and 29069 transitions. [2021-11-07 01:21:27,139 INFO L78 Accepts]: Start accepts. Automaton has 20411 states and 29069 transitions. Word has length 36 [2021-11-07 01:21:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:27,140 INFO L470 AbstractCegarLoop]: Abstraction has 20411 states and 29069 transitions. [2021-11-07 01:21:27,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 01:21:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 20411 states and 29069 transitions. [2021-11-07 01:21:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:21:27,145 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:27,145 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:27,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:27,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:27,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:21:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 216283252, now seen corresponding path program 1 times [2021-11-07 01:21:27,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:27,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293146536] [2021-11-07 01:21:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:27,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:27,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:27,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:21:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:39,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:21:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:39,813 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 01:21:39,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:40,171 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 01:21:40,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:40,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293146536] [2021-11-07 01:21:40,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293146536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:40,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:40,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:21:40,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513170275] [2021-11-07 01:21:40,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:21:40,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:40,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:21:40,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:21:40,175 INFO L87 Difference]: Start difference. First operand 20411 states and 29069 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 01:21:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:41,322 INFO L93 Difference]: Finished difference Result 47547 states and 67734 transitions. [2021-11-07 01:21:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:21:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-07 01:21:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:41,399 INFO L225 Difference]: With dead ends: 47547 [2021-11-07 01:21:41,399 INFO L226 Difference]: Without dead ends: 27164 [2021-11-07 01:21:41,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27164 states. [2021-11-07 01:21:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27164 to 20411. [2021-11-07 01:21:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20411 states, 20400 states have (on average 1.4249019607843136) internal successors, (29068), 20410 states have internal predecessors, (29068), 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 01:21:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20411 states to 20411 states and 29068 transitions. [2021-11-07 01:21:42,557 INFO L78 Accepts]: Start accepts. Automaton has 20411 states and 29068 transitions. Word has length 36 [2021-11-07 01:21:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:42,558 INFO L470 AbstractCegarLoop]: Abstraction has 20411 states and 29068 transitions. [2021-11-07 01:21:42,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 01:21:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 20411 states and 29068 transitions. [2021-11-07 01:21:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:21:42,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:42,566 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:42,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:42,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:42,790 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:21:42,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:42,790 INFO L85 PathProgramCache]: Analyzing trace with hash 474448690, now seen corresponding path program 1 times [2021-11-07 01:21:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:42,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708096277] [2021-11-07 01:21:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:42,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:42,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:42,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:42,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:21:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:21:54,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:54,367 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 01:21:54,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:54,576 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 01:21:54,576 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:54,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708096277] [2021-11-07 01:21:54,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708096277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:54,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:54,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-07 01:21:54,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047167578] [2021-11-07 01:21:54,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:21:54,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:54,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:21:54,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:21:54,579 INFO L87 Difference]: Start difference. First operand 20411 states and 29068 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 01:22:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:01,563 INFO L93 Difference]: Finished difference Result 203636 states and 290116 transitions. [2021-11-07 01:22:01,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:22:01,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 36 [2021-11-07 01:22:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:02,277 INFO L225 Difference]: With dead ends: 203636 [2021-11-07 01:22:02,277 INFO L226 Difference]: Without dead ends: 183253 [2021-11-07 01:22:02,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:22:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183253 states. [2021-11-07 01:22:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183253 to 20414. [2021-11-07 01:22:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20414 states, 20403 states have (on average 1.4248394843895507) internal successors, (29071), 20413 states have internal predecessors, (29071), 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 01:22:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20414 states to 20414 states and 29071 transitions. [2021-11-07 01:22:05,783 INFO L78 Accepts]: Start accepts. Automaton has 20414 states and 29071 transitions. Word has length 36 [2021-11-07 01:22:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:05,784 INFO L470 AbstractCegarLoop]: Abstraction has 20414 states and 29071 transitions. [2021-11-07 01:22:05,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 01:22:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 20414 states and 29071 transitions. [2021-11-07 01:22:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 01:22:05,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:05,789 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:05,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:06,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:06,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:22:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1154507060, now seen corresponding path program 1 times [2021-11-07 01:22:06,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:06,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286740346] [2021-11-07 01:22:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:06,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:06,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:06,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:06,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:22:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:17,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:17,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:17,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:18,049 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 01:22:18,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:18,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286740346] [2021-11-07 01:22:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286740346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:18,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:18,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:22:18,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599391429] [2021-11-07 01:22:18,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:18,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:18,052 INFO L87 Difference]: Start difference. First operand 20414 states and 29071 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 01:22:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:20,015 INFO L93 Difference]: Finished difference Result 40770 states and 58080 transitions. [2021-11-07 01:22:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-11-07 01:22:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:20,075 INFO L225 Difference]: With dead ends: 40770 [2021-11-07 01:22:20,075 INFO L226 Difference]: Without dead ends: 40753 [2021-11-07 01:22:20,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 01:22:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40753 states. [2021-11-07 01:22:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40753 to 40753. [2021-11-07 01:22:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40753 states, 40743 states have (on average 1.4250791547014212) internal successors, (58062), 40752 states have internal predecessors, (58062), 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 01:22:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40753 states to 40753 states and 58062 transitions. [2021-11-07 01:22:22,543 INFO L78 Accepts]: Start accepts. Automaton has 40753 states and 58062 transitions. Word has length 36 [2021-11-07 01:22:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:22,543 INFO L470 AbstractCegarLoop]: Abstraction has 40753 states and 58062 transitions. [2021-11-07 01:22:22,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 01:22:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 40753 states and 58062 transitions. [2021-11-07 01:22:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:22:22,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:22,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:22,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:22,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:22:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1430017146, now seen corresponding path program 1 times [2021-11-07 01:22:22,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:22,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931758988] [2021-11-07 01:22:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:22,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:22,767 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:22,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:22:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:33,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:22:33,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:34,457 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 01:22:34,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:34,850 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 01:22:34,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:34,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931758988] [2021-11-07 01:22:34,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931758988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:34,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:34,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:22:34,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948714626] [2021-11-07 01:22:34,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:22:34,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:22:34,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:22:34,853 INFO L87 Difference]: Start difference. First operand 40753 states and 58062 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 01:22:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:39,088 INFO L93 Difference]: Finished difference Result 122172 states and 174092 transitions. [2021-11-07 01:22:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:22:39,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:22:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:39,220 INFO L225 Difference]: With dead ends: 122172 [2021-11-07 01:22:39,221 INFO L226 Difference]: Without dead ends: 81445 [2021-11-07 01:22:39,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 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 01:22:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81445 states. [2021-11-07 01:22:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81445 to 81431. [2021-11-07 01:22:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81431 states, 81422 states have (on average 1.4252658986514701) internal successors, (116048), 81430 states have internal predecessors, (116048), 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 01:22:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81431 states to 81431 states and 116048 transitions. [2021-11-07 01:22:44,109 INFO L78 Accepts]: Start accepts. Automaton has 81431 states and 116048 transitions. Word has length 37 [2021-11-07 01:22:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:44,109 INFO L470 AbstractCegarLoop]: Abstraction has 81431 states and 116048 transitions. [2021-11-07 01:22:44,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 01:22:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 81431 states and 116048 transitions. [2021-11-07 01:22:44,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:22:44,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:44,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:44,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:44,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:44,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 01:22:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2114400830, now seen corresponding path program 1 times [2021-11-07 01:22:44,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:44,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080832086] [2021-11-07 01:22:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:44,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:44,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:44,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d013ced9-c573-4780-b74e-b195a4791790/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:22:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:55,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3021 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:22:55,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:56,008 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 01:22:56,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:56,208 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 01:22:56,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:56,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080832086] [2021-11-07 01:22:56,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080832086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:56,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:56,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-07 01:22:56,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948805493] [2021-11-07 01:22:56,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:22:56,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:22:56,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:22:56,210 INFO L87 Difference]: Start difference. First operand 81431 states and 116048 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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)