./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:00:43,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:00:43,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:00:43,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:00:43,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:00:43,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:00:43,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:00:43,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:00:43,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:00:43,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:00:43,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:00:43,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:00:43,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:00:43,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:00:43,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:00:43,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:00:43,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:00:43,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:00:43,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:00:43,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:00:43,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:00:43,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:00:43,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:00:43,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:00:43,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:00:43,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:00:43,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:00:43,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:00:43,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:00:43,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:00:43,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:00:43,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:00:43,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:00:43,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:00:43,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:00:43,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:00:43,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:00:43,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:00:43,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:00:43,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:00:43,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:00:43,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:00:43,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:00:43,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:00:43,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:00:43,940 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:00:43,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:00:43,941 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:00:43,941 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:00:43,941 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:00:43,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:00:43,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:00:43,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:00:43,949 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:00:43,949 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:00:43,949 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:00:43,950 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:00:43,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:00:43,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:00:43,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:00:43,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:00:43,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:00:43,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:00:43,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:00:43,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:00:43,952 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:00:43,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:00:43,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:00:43,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:00:43,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:43,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:00:43,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:00:43,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:00:43,956 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:00:43,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:00:43,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:00:43,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:00:43,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:00:43,957 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-07 02:00:44,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:00:44,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:00:44,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:00:44,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:00:44,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:00:44,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:00:44,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/e76e32ae9/14d30116553942c1948c90cca06e6c3f/FLAG658eed54c [2021-11-07 02:00:45,193 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:00:45,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:00:45,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/e76e32ae9/14d30116553942c1948c90cca06e6c3f/FLAG658eed54c [2021-11-07 02:00:45,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/e76e32ae9/14d30116553942c1948c90cca06e6c3f [2021-11-07 02:00:45,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:00:45,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:00:45,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:45,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:00:45,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:00:45,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:45" (1/1) ... [2021-11-07 02:00:45,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c4fb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:45, skipping insertion in model container [2021-11-07 02:00:45,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:45" (1/1) ... [2021-11-07 02:00:45,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:00:45,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:46,447 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 02:00:46,748 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 02:00:46,754 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 02:00:46,759 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 02:00:46,762 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 02:00:46,763 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 02:00:46,766 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 02:00:46,790 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 02:00:46,798 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 02:00:46,814 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 02:00:46,819 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 02:00:46,820 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 02:00:46,824 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 02:00:46,824 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 02:00:46,828 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 02:00:46,828 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 02:00:46,831 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 02:00:46,831 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 02:00:46,835 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 02:00:46,835 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 02:00:46,847 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 02:00:46,849 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 02:00:46,877 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 02:00:46,877 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 02:00:46,881 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 02:00:46,881 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 02:00:46,898 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 02:00:46,898 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 02:00:46,901 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 02:00:46,905 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 02:00:46,908 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 02:00:46,913 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 02:00:46,925 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 02:00:46,948 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 02:00:46,953 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 02:00:46,980 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 02:00:46,980 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 02:00:46,981 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 02:00:46,981 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 02:00:46,982 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 02:00:46,982 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 02:00:46,983 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 02:00:46,983 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 02:00:46,984 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 02:00:46,987 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 02:00:46,988 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 02:00:46,988 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 02:00:47,045 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 02:00:47,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:47,145 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 02:00:47,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f5b6287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:47, skipping insertion in model container [2021-11-07 02:00:47,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:47,146 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:00:47,148 INFO L168 Benchmark]: Toolchain (without parser) took 1457.42 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 74.5 MB in the beginning and 113.2 MB in the end (delta: -38.7 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:47,149 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:00:47,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1455.05 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 74.2 MB in the beginning and 113.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:47,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 115.3 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1455.05 ms. Allocated memory was 115.3 MB in the beginning and 157.3 MB in the end (delta: 41.9 MB). Free memory was 74.2 MB in the beginning and 113.2 MB in the end (delta: -38.9 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3380]: 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:00:49,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:00:49,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:00:49,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:00:49,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:00:49,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:00:49,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:00:49,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:00:49,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:00:49,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:00:49,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:00:49,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:00:49,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:00:49,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:00:49,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:00:49,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:00:49,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:00:49,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:00:49,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:00:49,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:00:49,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:00:49,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:00:49,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:00:49,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:00:49,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:00:49,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:00:49,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:00:49,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:00:49,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:00:49,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:00:49,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:00:49,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:00:49,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:00:49,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:00:49,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:00:49,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:00:49,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:00:49,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:00:49,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:00:49,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:00:49,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:00:49,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:00:49,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:00:49,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:00:49,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:00:49,433 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:00:49,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:00:49,433 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:00:49,433 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:00:49,433 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:00:49,433 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:00:49,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:00:49,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:00:49,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:00:49,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:00:49,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:00:49,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:00:49,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:00:49,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:00:49,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:00:49,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:00:49,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:00:49,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:00:49,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:00:49,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:00:49,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:49,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:00:49,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:00:49,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:00:49,440 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-07 02:00:49,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:00:49,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:00:49,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:00:49,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:00:49,846 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:00:49,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:00:49,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/b4705b7f3/b56d9c3315834c53b9747c4d862fa88e/FLAG2f5f9122d [2021-11-07 02:00:50,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:00:50,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:00:50,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/b4705b7f3/b56d9c3315834c53b9747c4d862fa88e/FLAG2f5f9122d [2021-11-07 02:00:51,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/data/b4705b7f3/b56d9c3315834c53b9747c4d862fa88e [2021-11-07 02:00:51,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:00:51,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:00:51,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:51,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:00:51,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:00:51,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:51" (1/1) ... [2021-11-07 02:00:51,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a2061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:51, skipping insertion in model container [2021-11-07 02:00:51,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:51" (1/1) ... [2021-11-07 02:00:51,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:00:51,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:52,942 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 02:00:52,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:53,043 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:00:53,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:53,425 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 02:00:53,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:53,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:00:53,982 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_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-07 02:00:53,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:54,105 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:00:54,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54 WrapperNode [2021-11-07 02:00:54,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:54,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:54,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:00:54,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:00:54,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:54,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:55,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:55,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:00:55,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:00:55,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:00:55,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:55,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:55,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:55,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:56,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:56,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:56,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:56,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:00:56,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:00:56,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:00:56,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:00:56,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (1/1) ... [2021-11-07 02:00:56,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:56,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:00:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:00:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:00:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:00:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 02:00:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:00:57,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:00:57,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:00:57,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 02:00:57,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:00:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:00:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:00:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:00:57,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:00:57,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:00,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:00,340 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2021-11-07 02:08:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:00 BoogieIcfgContainer [2021-11-07 02:08:00,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:00,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:00,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:00,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:00:51" (1/3) ... [2021-11-07 02:08:00,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bec20e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:00, skipping insertion in model container [2021-11-07 02:08:00,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:54" (2/3) ... [2021-11-07 02:08:00,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bec20e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:00, skipping insertion in model container [2021-11-07 02:08:00,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:00" (3/3) ... [2021-11-07 02:08:00,357 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:08:00,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:00,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 02:08:00,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:00,446 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 02:08:00,446 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 02:08:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:08:00,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:00,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:00,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:08:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2021-11-07 02:08:00,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:00,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092340829] [2021-11-07 02:08:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:00,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:00,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:00,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:08:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:12,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:08:12,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:12,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:12,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:12,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092340829] [2021-11-07 02:08:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092340829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:12,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:08:12,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140263853] [2021-11-07 02:08:12,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:08:12,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:08:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:13,015 INFO L87 Difference]: Start difference. First operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:13,282 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2021-11-07 02:08:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:08:13,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 02:08:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:13,336 INFO L225 Difference]: With dead ends: 13582 [2021-11-07 02:08:13,337 INFO L226 Difference]: Without dead ends: 6781 [2021-11-07 02:08:13,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:08:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2021-11-07 02:08:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2021-11-07 02:08:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6777 states have (on average 1.428655747380847) internal successors, (9682), 6780 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2021-11-07 02:08:13,623 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2021-11-07 02:08:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:13,624 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2021-11-07 02:08:13,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:13,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2021-11-07 02:08:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 02:08:13,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:13,635 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:13,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:13,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:13,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:08:13,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2021-11-07 02:08:13,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:13,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093561344] [2021-11-07 02:08:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:13,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:13,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:13,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:13,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:08:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:25,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 3319 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:25,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:25,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:26,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:26,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093561344] [2021-11-07 02:08:26,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093561344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:26,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:26,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:08:26,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142898299] [2021-11-07 02:08:26,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:26,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:26,176 INFO L87 Difference]: Start difference. First operand 6781 states and 9682 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:27,980 INFO L93 Difference]: Finished difference Result 13570 states and 19403 transitions. [2021-11-07 02:08:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 02:08:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:28,022 INFO L225 Difference]: With dead ends: 13570 [2021-11-07 02:08:28,022 INFO L226 Difference]: Without dead ends: 6813 [2021-11-07 02:08:28,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2021-11-07 02:08:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 6813. [2021-11-07 02:08:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6809 states have (on average 1.4266412101630195) internal successors, (9714), 6812 states have internal predecessors, (9714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 9714 transitions. [2021-11-07 02:08:28,257 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 9714 transitions. Word has length 67 [2021-11-07 02:08:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:28,258 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 9714 transitions. [2021-11-07 02:08:28,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 9714 transitions. [2021-11-07 02:08:28,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 02:08:28,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:28,263 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:28,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:28,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:08:28,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:08:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash 13096546, now seen corresponding path program 1 times [2021-11-07 02:08:28,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:28,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467939245] [2021-11-07 02:08:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:28,493 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:28,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:28,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:28,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:08:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:40,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 3429 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:08:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 02:08:41,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:42,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 02:08:42,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:42,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467939245] [2021-11-07 02:08:42,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467939245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:42,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [766990910] [2021-11-07 02:08:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:42,029 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:42,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:08:42,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:08:42,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:08:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 3429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:08:45,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:08:46,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:08:47,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [766990910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:47,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:47,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:08:47,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802500330] [2021-11-07 02:08:47,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:47,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:47,536 INFO L87 Difference]: Start difference. First operand 6813 states and 9714 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:47,857 INFO L93 Difference]: Finished difference Result 13541 states and 19332 transitions. [2021-11-07 02:08:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 89 [2021-11-07 02:08:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:47,953 INFO L225 Difference]: With dead ends: 13541 [2021-11-07 02:08:47,953 INFO L226 Difference]: Without dead ends: 13530 [2021-11-07 02:08:47,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2021-11-07 02:08:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 13530. [2021-11-07 02:08:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 13527 states have (on average 1.4282546019072966) internal successors, (19320), 13529 states have internal predecessors, (19320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 19320 transitions. [2021-11-07 02:08:48,358 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 19320 transitions. Word has length 89 [2021-11-07 02:08:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:48,361 INFO L470 AbstractCegarLoop]: Abstraction has 13530 states and 19320 transitions. [2021-11-07 02:08:48,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 19320 transitions. [2021-11-07 02:08:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:08:48,369 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:48,369 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:48,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:48,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:48,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:08:48,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:08:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1271401779, now seen corresponding path program 1 times [2021-11-07 02:08:48,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:08:48,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261920232] [2021-11-07 02:08:48,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:48,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:08:48,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:08:48,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:08:48,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:09:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:00,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:09:00,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 02:09:01,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 02:09:02,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:02,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261920232] [2021-11-07 02:09:02,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261920232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:02,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1641115200] [2021-11-07 02:09:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:02,075 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:02,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:02,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:02,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:09:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:05,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:09:05,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:05,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:06,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1641115200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:06,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:06,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5, 5] total 12 [2021-11-07 02:09:06,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237854715] [2021-11-07 02:09:06,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:09:06,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:09:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:09:06,106 INFO L87 Difference]: Start difference. First operand 13530 states and 19320 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:08,239 INFO L93 Difference]: Finished difference Result 60494 states and 86480 transitions. [2021-11-07 02:09:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:09:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 107 [2021-11-07 02:09:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:08,372 INFO L225 Difference]: With dead ends: 60494 [2021-11-07 02:09:08,372 INFO L226 Difference]: Without dead ends: 47045 [2021-11-07 02:09:08,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:09:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47045 states. [2021-11-07 02:09:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47045 to 13534. [2021-11-07 02:09:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13534 states, 13531 states have (on average 1.4281280023649399) internal successors, (19324), 13533 states have internal predecessors, (19324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 19324 transitions. [2021-11-07 02:09:09,051 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 19324 transitions. Word has length 107 [2021-11-07 02:09:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:09,051 INFO L470 AbstractCegarLoop]: Abstraction has 13534 states and 19324 transitions. [2021-11-07 02:09:09,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 19324 transitions. [2021-11-07 02:09:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 02:09:09,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:09,066 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:09,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:09,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:09,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:09,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:09:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1166642188, now seen corresponding path program 1 times [2021-11-07 02:09:09,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:09,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541874242] [2021-11-07 02:09:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:09,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:09,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:09,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:09,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:09:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:09:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:09:22,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:09:22,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:22,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541874242] [2021-11-07 02:09:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541874242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:22,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778378676] [2021-11-07 02:09:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:22,947 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:22,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:22,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:22,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:09:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:26,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 3499 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:09:26,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:26,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:26,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1778378676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:26,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:26,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:09:26,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985523924] [2021-11-07 02:09:26,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:09:26,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:09:26,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:09:26,827 INFO L87 Difference]: Start difference. First operand 13534 states and 19324 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:27,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:27,803 INFO L93 Difference]: Finished difference Result 26987 states and 38555 transitions. [2021-11-07 02:09:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:09:27,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 115 [2021-11-07 02:09:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:27,838 INFO L225 Difference]: With dead ends: 26987 [2021-11-07 02:09:27,838 INFO L226 Difference]: Without dead ends: 13534 [2021-11-07 02:09:27,860 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:09:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13534 states. [2021-11-07 02:09:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13534 to 13534. [2021-11-07 02:09:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13534 states, 13531 states have (on average 1.4279801936294434) internal successors, (19322), 13533 states have internal predecessors, (19322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 19322 transitions. [2021-11-07 02:09:28,306 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 19322 transitions. Word has length 115 [2021-11-07 02:09:28,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:28,307 INFO L470 AbstractCegarLoop]: Abstraction has 13534 states and 19322 transitions. [2021-11-07 02:09:28,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 19322 transitions. [2021-11-07 02:09:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 02:09:28,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:28,327 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:28,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:28,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-07 02:09:28,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:28,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:09:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1379099175, now seen corresponding path program 1 times [2021-11-07 02:09:28,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:28,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786264634] [2021-11-07 02:09:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:28,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:28,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:28,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:09:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:09:40,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:09:41,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:09:42,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:09:42,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786264634] [2021-11-07 02:09:42,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786264634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:42,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838958132] [2021-11-07 02:09:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:42,843 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:09:42,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:09:42,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:09:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:09:46,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:48,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:09:49,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1838958132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:09:49,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:09:49,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:09:49,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333324997] [2021-11-07 02:09:49,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:09:49,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:09:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:09:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:09:49,455 INFO L87 Difference]: Start difference. First operand 13534 states and 19322 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:50,089 INFO L93 Difference]: Finished difference Result 33639 states and 48081 transitions. [2021-11-07 02:09:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:09:50,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 152 [2021-11-07 02:09:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:50,227 INFO L225 Difference]: With dead ends: 33639 [2021-11-07 02:09:50,227 INFO L226 Difference]: Without dead ends: 20186 [2021-11-07 02:09:50,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:09:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20186 states. [2021-11-07 02:09:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20186 to 13534. [2021-11-07 02:09:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13534 states, 13531 states have (on average 1.4278323848939471) internal successors, (19320), 13533 states have internal predecessors, (19320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 19320 transitions. [2021-11-07 02:09:50,798 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 19320 transitions. Word has length 152 [2021-11-07 02:09:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:50,799 INFO L470 AbstractCegarLoop]: Abstraction has 13534 states and 19320 transitions. [2021-11-07 02:09:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:09:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 19320 transitions. [2021-11-07 02:09:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 02:09:50,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:50,818 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:09:50,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:51,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:51,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:51,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:09:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash 961702569, now seen corresponding path program 1 times [2021-11-07 02:09:51,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:09:51,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325778905] [2021-11-07 02:09:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:51,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:09:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:09:51,247 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:09:51,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:10:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:03,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:10:03,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:04,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:05,537 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:05,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325778905] [2021-11-07 02:10:05,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325778905] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:05,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1526694269] [2021-11-07 02:10:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:05,538 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:05,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:05,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:05,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:10:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:09,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:10:09,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:10:11,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 02:10:12,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1526694269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:12,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:10:12,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:10:12,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314990639] [2021-11-07 02:10:12,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:10:12,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:10:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:10:12,392 INFO L87 Difference]: Start difference. First operand 13534 states and 19320 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:13,112 INFO L93 Difference]: Finished difference Result 33639 states and 48077 transitions. [2021-11-07 02:10:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:10:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 152 [2021-11-07 02:10:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:13,142 INFO L225 Difference]: With dead ends: 33639 [2021-11-07 02:10:13,142 INFO L226 Difference]: Without dead ends: 20186 [2021-11-07 02:10:13,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:10:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20186 states. [2021-11-07 02:10:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20186 to 13534. [2021-11-07 02:10:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13534 states, 13531 states have (on average 1.427684576158451) internal successors, (19318), 13533 states have internal predecessors, (19318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 19318 transitions. [2021-11-07 02:10:13,825 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 19318 transitions. Word has length 152 [2021-11-07 02:10:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:13,826 INFO L470 AbstractCegarLoop]: Abstraction has 13534 states and 19318 transitions. [2021-11-07 02:10:13,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 19318 transitions. [2021-11-07 02:10:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 02:10:13,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:13,846 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:13,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:14,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:14,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:14,259 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:10:14,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1163526503, now seen corresponding path program 1 times [2021-11-07 02:10:14,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:14,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748420884] [2021-11-07 02:10:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:14,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:14,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:14,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:10:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:26,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:10:26,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:27,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:28,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:28,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748420884] [2021-11-07 02:10:28,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748420884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:28,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770537274] [2021-11-07 02:10:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:28,613 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:28,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:10:28,614 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:10:28,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:10:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:37,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:10:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:38,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 02:10:39,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770537274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:39,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929774529] [2021-11-07 02:10:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:39,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:39,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:39,080 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:10:39,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 02:10:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:10:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 02:10:45,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 02:10:45,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929774529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:10:45,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:10:45,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:10:45,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332635400] [2021-11-07 02:10:45,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:10:45,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:10:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:10:45,795 INFO L87 Difference]: Start difference. First operand 13534 states and 19318 transitions. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:51,432 INFO L93 Difference]: Finished difference Result 27110 states and 38745 transitions. [2021-11-07 02:10:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:10:51,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 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 152 [2021-11-07 02:10:51,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:51,449 INFO L225 Difference]: With dead ends: 27110 [2021-11-07 02:10:51,450 INFO L226 Difference]: Without dead ends: 13602 [2021-11-07 02:10:51,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:10:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13602 states. [2021-11-07 02:10:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13602 to 13602. [2021-11-07 02:10:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13602 states, 13599 states have (on average 1.4255459960291197) internal successors, (19386), 13601 states have internal predecessors, (19386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13602 states to 13602 states and 19386 transitions. [2021-11-07 02:10:52,160 INFO L78 Accepts]: Start accepts. Automaton has 13602 states and 19386 transitions. Word has length 152 [2021-11-07 02:10:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:52,160 INFO L470 AbstractCegarLoop]: Abstraction has 13602 states and 19386 transitions. [2021-11-07 02:10:52,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13602 states and 19386 transitions. [2021-11-07 02:10:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 02:10:52,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:52,176 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:10:52,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:52,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:52,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:52,791 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:10:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1228772519, now seen corresponding path program 2 times [2021-11-07 02:10:52,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:52,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192182332] [2021-11-07 02:10:52,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:10:52,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:52,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:52,799 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:52,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_829cd0ce-2cd9-4b88-8af6-d6705a6c06bc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process