./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/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_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/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_79c344e9-f0c1-4b75-a25a-53b14af5682d/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 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:35,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:35,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:35,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:35,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:35,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:35,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:35,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:35,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:35,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:35,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:35,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:35,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:35,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:35,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:35,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:35,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:35,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:35,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:35,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:35,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:35,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:35,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:35,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:35,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:35,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:35,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:35,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:35,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:35,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:35,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:35,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:35,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:35,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:35,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:35,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:35,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:35,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:35,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:35,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:35,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:35,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:27:35,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:35,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:35,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:35,988 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:35,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:35,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:35,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:27:35,989 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:35,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:35,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:27:35,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:27:35,990 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:35,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:27:35,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:27:35,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:27:35,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:35,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:27:35,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:35,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:35,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:35,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:35,996 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:35,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:35,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:35,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:35,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:35,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:35,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:35,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:36,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:36,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:36,002 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:27:36,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:27:36,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:36,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:36,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:36,003 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-07 01:27:36,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:36,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:36,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:36,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:36,386 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:36,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 01:27:36,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/8363fd524/0d3d3cf67fe147dca2ccd453b7ac172f/FLAG94a80b3c7 [2021-11-07 01:27:37,448 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:37,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 01:27:37,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/8363fd524/0d3d3cf67fe147dca2ccd453b7ac172f/FLAG94a80b3c7 [2021-11-07 01:27:37,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/8363fd524/0d3d3cf67fe147dca2ccd453b7ac172f [2021-11-07 01:27:37,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:37,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:37,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:37,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:37,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:37,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:37" (1/1) ... [2021-11-07 01:27:37,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8b2ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:37, skipping insertion in model container [2021-11-07 01:27:37,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:37" (1/1) ... [2021-11-07 01:27:37,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:38,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:38,690 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 01:27:39,038 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,281 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 01:27:39,538 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,545 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,552 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,648 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,655 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,866 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,873 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,885 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,899 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,914 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,919 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,936 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,954 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,961 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,969 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,976 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:39,991 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,000 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,007 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,015 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,023 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,030 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,036 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,046 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,053 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,080 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,107 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,130 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,138 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,184 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,235 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,238 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,240 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,270 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,270 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,271 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,272 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,272 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,273 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,273 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,273 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,282 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,282 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,284 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,284 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,286 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,287 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,288 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,288 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,289 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,289 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,290 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,291 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,292 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,293 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,293 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,299 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:27:40,395 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 01:27:40,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:40,544 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:27:40,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ad5838a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:40, skipping insertion in model container [2021-11-07 01:27:40,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:40,546 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:27:40,548 INFO L168 Benchmark]: Toolchain (without parser) took 2713.19 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 76.6 MB in the beginning and 101.7 MB in the end (delta: -25.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:40,549 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:27:40,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2710.60 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 76.6 MB in the beginning and 101.7 MB in the end (delta: -25.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:27:40,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 83.9 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2710.60 ms. Allocated memory was 107.0 MB in the beginning and 146.8 MB in the end (delta: 39.8 MB). Free memory was 76.6 MB in the beginning and 101.7 MB in the end (delta: -25.2 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5096]: 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/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_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/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_79c344e9-f0c1-4b75-a25a-53b14af5682d/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 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:27:42,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:27:42,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:27:43,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:27:43,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:27:43,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:27:43,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:27:43,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:27:43,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:27:43,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:27:43,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:27:43,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:27:43,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:27:43,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:27:43,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:27:43,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:27:43,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:27:43,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:27:43,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:27:43,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:27:43,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:27:43,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:27:43,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:27:43,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:27:43,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:27:43,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:27:43,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:27:43,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:27:43,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:27:43,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:27:43,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:27:43,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:27:43,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:27:43,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:27:43,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:27:43,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:27:43,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:27:43,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:27:43,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:27:43,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:27:43,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:27:43,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:27:43,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:27:43,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:27:43,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:27:43,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:27:43,170 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:27:43,170 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:27:43,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:27:43,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:27:43,170 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:27:43,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:27:43,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:27:43,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:27:43,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:27:43,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:27:43,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:27:43,174 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:27:43,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:27:43,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:27:43,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:27:43,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:27:43,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:27:43,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:27:43,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:27:43,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:43,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:27:43,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:27:43,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:27:43,177 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:27:43,177 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:27:43,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:27:43,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:27:43,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:27:43,178 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-07 01:27:43,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:27:43,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:27:43,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:27:43,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:27:43,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:27:43,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 01:27:43,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/c58e3ff81/431a9065e0d2434fa6131e33e4009902/FLAG2000a551c [2021-11-07 01:27:44,841 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:27:44,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 01:27:44,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/c58e3ff81/431a9065e0d2434fa6131e33e4009902/FLAG2000a551c [2021-11-07 01:27:45,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/data/c58e3ff81/431a9065e0d2434fa6131e33e4009902 [2021-11-07 01:27:45,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:27:45,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:27:45,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:45,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:27:45,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:27:45,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:45" (1/1) ... [2021-11-07 01:27:45,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e43a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:45, skipping insertion in model container [2021-11-07 01:27:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:27:45" (1/1) ... [2021-11-07 01:27:45,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:27:45,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:46,155 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 01:27:46,881 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 01:27:48,169 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 01:27:48,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:48,291 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:27:48,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:27:48,488 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 01:27:48,517 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 01:27:48,796 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 01:27:48,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:48,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:27:48,979 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-07 01:27:49,013 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_79c344e9-f0c1-4b75-a25a-53b14af5682d/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-07 01:27:49,628 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 01:27:49,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:27:49,828 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:27:49,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49 WrapperNode [2021-11-07 01:27:49,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:27:49,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:49,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:27:49,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:27:49,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:49,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:27:50,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:27:50,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:27:50,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:27:50,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:50,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:51,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:51,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:27:51,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:27:51,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:27:51,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:27:51,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (1/1) ... [2021-11-07 01:27:51,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:27:51,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:27:51,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:27:51,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:27:51,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:27:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:27:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:27:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:27:51,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:27:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:27:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 01:27:51,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 01:27:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-07 01:27:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-07 01:27:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-07 01:27:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-07 01:27:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-07 01:27:51,285 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-07 01:27:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-07 01:27:51,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-07 01:27:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:27:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:27:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-07 01:27:51,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-07 01:27:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 01:27:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-07 01:27:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-07 01:27:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-07 01:27:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-07 01:27:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:27:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:27:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:27:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:27:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:27:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:27:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:27:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:27:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:27:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:27:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-07 01:27:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-07 01:27:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-07 01:27:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-07 01:27:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-07 01:27:51,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-07 01:27:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-07 01:27:51,292 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-07 01:27:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-07 01:27:51,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-07 01:27:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-07 01:27:51,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-07 01:27:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-07 01:27:51,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-07 01:27:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-07 01:27:51,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-07 01:27:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:27:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-07 01:27:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-07 01:27:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-07 01:27:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:27:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:27:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:27:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:27:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:27:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:27:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:27:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:27:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:27:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:27:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:27:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:27:51,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2021-11-07 01:27:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2021-11-07 01:27:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:27:51,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:27:51,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:20,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:20,815 INFO L299 CfgBuilder]: Removed 1862 assume(true) statements. [2021-11-07 01:29:20,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:20 BoogieIcfgContainer [2021-11-07 01:29:20,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:20,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:20,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:20,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:20,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:27:45" (1/3) ... [2021-11-07 01:29:20,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c788685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:20, skipping insertion in model container [2021-11-07 01:29:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:27:49" (2/3) ... [2021-11-07 01:29:20,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c788685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:20, skipping insertion in model container [2021-11-07 01:29:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:20" (3/3) ... [2021-11-07 01:29:20,831 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-07 01:29:20,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:20,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:29:20,920 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:20,926 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:29:20,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:29:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 2524 states, 2450 states have (on average 1.4534693877551021) internal successors, (3561), 2460 states have internal predecessors, (3561), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-07 01:29:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 01:29:21,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:21,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:21,018 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 582626150, now seen corresponding path program 1 times [2021-11-07 01:29:21,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:21,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137720393] [2021-11-07 01:29:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:21,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:21,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:21,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:29:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:23,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:29:23,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:23,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:29:23,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:23,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137720393] [2021-11-07 01:29:23,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137720393] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:23,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:23,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:29:23,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020228154] [2021-11-07 01:29:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:23,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:23,819 INFO L87 Difference]: Start difference. First operand has 2524 states, 2450 states have (on average 1.4534693877551021) internal successors, (3561), 2460 states have internal predecessors, (3561), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:24,589 INFO L93 Difference]: Finished difference Result 5054 states and 7377 transitions. [2021-11-07 01:29:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 97 [2021-11-07 01:29:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:24,630 INFO L225 Difference]: With dead ends: 5054 [2021-11-07 01:29:24,630 INFO L226 Difference]: Without dead ends: 2524 [2021-11-07 01:29:24,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-11-07 01:29:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2524. [2021-11-07 01:29:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2451 states have (on average 1.3863729090167278) internal successors, (3398), 2460 states have internal predecessors, (3398), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-07 01:29:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3494 transitions. [2021-11-07 01:29:24,863 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3494 transitions. Word has length 97 [2021-11-07 01:29:24,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:24,864 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3494 transitions. [2021-11-07 01:29:24,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3494 transitions. [2021-11-07 01:29:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:29:24,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:24,871 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:29:24,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:29:25,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:25,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1769213606, now seen corresponding path program 1 times [2021-11-07 01:29:25,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:25,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758693196] [2021-11-07 01:29:25,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:25,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:25,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:25,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:29:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:27,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:27,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:27,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:28,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:28,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758693196] [2021-11-07 01:29:28,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758693196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:28,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1759119442] [2021-11-07 01:29:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:28,197 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:28,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:28,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:28,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:29:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:29,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:29:29,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:29:30,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:29:30,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1759119442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:30,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:30,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:29:30,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663439364] [2021-11-07 01:29:30,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:30,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:30,654 INFO L87 Difference]: Start difference. First operand 2524 states and 3494 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:34,089 INFO L93 Difference]: Finished difference Result 9342 states and 13079 transitions. [2021-11-07 01:29:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 101 [2021-11-07 01:29:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:34,153 INFO L225 Difference]: With dead ends: 9342 [2021-11-07 01:29:34,154 INFO L226 Difference]: Without dead ends: 7029 [2021-11-07 01:29:34,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2021-11-07 01:29:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 7029. [2021-11-07 01:29:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7029 states, 6820 states have (on average 1.3997067448680351) internal successors, (9546), 6839 states have internal predecessors, (9546), 144 states have call successors, (144), 60 states have call predecessors, (144), 60 states have return successors, (144), 138 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-07 01:29:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 9834 transitions. [2021-11-07 01:29:34,466 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 9834 transitions. Word has length 101 [2021-11-07 01:29:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:34,467 INFO L470 AbstractCegarLoop]: Abstraction has 7029 states and 9834 transitions. [2021-11-07 01:29:34,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 9834 transitions. [2021-11-07 01:29:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 01:29:34,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:34,475 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:29:34,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:34,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:34,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:34,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash -72786635, now seen corresponding path program 1 times [2021-11-07 01:29:34,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:34,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308286934] [2021-11-07 01:29:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:34,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:34,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:34,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:34,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:29:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:36,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:36,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:37,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:37,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:37,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308286934] [2021-11-07 01:29:37,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308286934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:37,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569124496] [2021-11-07 01:29:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:37,970 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:37,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:38,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:29:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:39,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:29:39,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:29:40,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:29:40,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569124496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:40,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:40,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:29:40,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692436175] [2021-11-07 01:29:40,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:40,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:40,229 INFO L87 Difference]: Start difference. First operand 7029 states and 9834 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:41,124 INFO L93 Difference]: Finished difference Result 13846 states and 19413 transitions. [2021-11-07 01:29:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 104 [2021-11-07 01:29:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:41,187 INFO L225 Difference]: With dead ends: 13846 [2021-11-07 01:29:41,188 INFO L226 Difference]: Without dead ends: 7028 [2021-11-07 01:29:41,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 405 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 01:29:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-11-07 01:29:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 7028. [2021-11-07 01:29:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 6819 states have (on average 1.3993254142836193) internal successors, (9542), 6838 states have internal predecessors, (9542), 144 states have call successors, (144), 60 states have call predecessors, (144), 60 states have return successors, (144), 138 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-07 01:29:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 9830 transitions. [2021-11-07 01:29:41,763 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 9830 transitions. Word has length 104 [2021-11-07 01:29:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:41,764 INFO L470 AbstractCegarLoop]: Abstraction has 7028 states and 9830 transitions. [2021-11-07 01:29:41,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 9830 transitions. [2021-11-07 01:29:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 01:29:41,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:41,777 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:29:41,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:42,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:42,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:42,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash 609057690, now seen corresponding path program 1 times [2021-11-07 01:29:42,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:42,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434916211] [2021-11-07 01:29:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:42,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:42,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:42,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:29:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:44,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:29:44,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:29:45,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:45,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434916211] [2021-11-07 01:29:45,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434916211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:45,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1483762654] [2021-11-07 01:29:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:45,436 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:45,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:45,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:45,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:29:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:47,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:29:47,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:29:49,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:29:51,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1483762654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:51,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:51,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:29:51,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190501941] [2021-11-07 01:29:51,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:51,025 INFO L87 Difference]: Start difference. First operand 7028 states and 9830 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:52,451 INFO L93 Difference]: Finished difference Result 20660 states and 29559 transitions. [2021-11-07 01:29:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 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 130 [2021-11-07 01:29:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:52,565 INFO L225 Difference]: With dead ends: 20660 [2021-11-07 01:29:52,566 INFO L226 Difference]: Without dead ends: 13843 [2021-11-07 01:29:52,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13843 states. [2021-11-07 01:29:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13843 to 13831. [2021-11-07 01:29:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13831 states, 13418 states have (on average 1.4011029959755552) internal successors, (18800), 13452 states have internal predecessors, (18800), 288 states have call successors, (288), 120 states have call predecessors, (288), 120 states have return successors, (576), 276 states have call predecessors, (576), 288 states have call successors, (576) [2021-11-07 01:29:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13831 states to 13831 states and 19664 transitions. [2021-11-07 01:29:53,383 INFO L78 Accepts]: Start accepts. Automaton has 13831 states and 19664 transitions. Word has length 130 [2021-11-07 01:29:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:53,388 INFO L470 AbstractCegarLoop]: Abstraction has 13831 states and 19664 transitions. [2021-11-07 01:29:53,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:53,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13831 states and 19664 transitions. [2021-11-07 01:29:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 01:29:53,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:53,397 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:29:53,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:53,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:53,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:53,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:29:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1700925881, now seen corresponding path program 1 times [2021-11-07 01:29:53,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:53,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577325272] [2021-11-07 01:29:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:53,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:53,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:53,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:29:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:55,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:55,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:29:56,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:29:56,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:56,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577325272] [2021-11-07 01:29:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577325272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1453157672] [2021-11-07 01:29:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:56,927 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:56,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:56,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:29:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:58,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:29:58,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:01,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:02,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1453157672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:02,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:02,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 10 [2021-11-07 01:30:02,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811621789] [2021-11-07 01:30:02,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:02,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:02,629 INFO L87 Difference]: Start difference. First operand 13831 states and 19664 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:03,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:03,255 INFO L93 Difference]: Finished difference Result 13831 states and 19664 transitions. [2021-11-07 01:30:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 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 131 [2021-11-07 01:30:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:03,324 INFO L225 Difference]: With dead ends: 13831 [2021-11-07 01:30:03,324 INFO L226 Difference]: Without dead ends: 13829 [2021-11-07 01:30:03,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13829 states. [2021-11-07 01:30:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13829 to 13829. [2021-11-07 01:30:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13829 states, 13417 states have (on average 1.4010583587985392) internal successors, (18798), 13450 states have internal predecessors, (18798), 288 states have call successors, (288), 120 states have call predecessors, (288), 120 states have return successors, (576), 276 states have call predecessors, (576), 288 states have call successors, (576) [2021-11-07 01:30:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13829 states to 13829 states and 19662 transitions. [2021-11-07 01:30:04,134 INFO L78 Accepts]: Start accepts. Automaton has 13829 states and 19662 transitions. Word has length 131 [2021-11-07 01:30:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:04,135 INFO L470 AbstractCegarLoop]: Abstraction has 13829 states and 19662 transitions. [2021-11-07 01:30:04,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13829 states and 19662 transitions. [2021-11-07 01:30:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 01:30:04,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:04,142 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:30:04,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:04,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:04,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:04,556 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1189101444, now seen corresponding path program 1 times [2021-11-07 01:30:04,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:04,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100035948] [2021-11-07 01:30:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:04,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:04,562 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:04,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:30:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:06,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:06,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:07,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:08,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:08,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100035948] [2021-11-07 01:30:08,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100035948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:08,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1193139185] [2021-11-07 01:30:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:08,035 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:08,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:08,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:30:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:30:10,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:11,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:12,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1193139185] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:12,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:12,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:30:12,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850673268] [2021-11-07 01:30:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:30:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:30:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:12,196 INFO L87 Difference]: Start difference. First operand 13829 states and 19662 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:12,635 INFO L93 Difference]: Finished difference Result 13829 states and 19662 transitions. [2021-11-07 01:30:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:12,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 132 [2021-11-07 01:30:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:12,698 INFO L225 Difference]: With dead ends: 13829 [2021-11-07 01:30:12,698 INFO L226 Difference]: Without dead ends: 13827 [2021-11-07 01:30:12,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:12,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13827 states. [2021-11-07 01:30:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13827 to 13827. [2021-11-07 01:30:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13827 states, 13416 states have (on average 1.4010137149672033) internal successors, (18796), 13448 states have internal predecessors, (18796), 288 states have call successors, (288), 120 states have call predecessors, (288), 120 states have return successors, (576), 276 states have call predecessors, (576), 288 states have call successors, (576) [2021-11-07 01:30:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13827 states to 13827 states and 19660 transitions. [2021-11-07 01:30:13,543 INFO L78 Accepts]: Start accepts. Automaton has 13827 states and 19660 transitions. Word has length 132 [2021-11-07 01:30:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:13,543 INFO L470 AbstractCegarLoop]: Abstraction has 13827 states and 19660 transitions. [2021-11-07 01:30:13,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13827 states and 19660 transitions. [2021-11-07 01:30:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 01:30:13,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:13,550 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:30:13,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:13,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:13,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:13,964 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1792554205, now seen corresponding path program 1 times [2021-11-07 01:30:13,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:13,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239313413] [2021-11-07 01:30:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:13,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:13,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:13,970 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:13,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:30:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:16,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:16,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:16,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:17,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:17,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239313413] [2021-11-07 01:30:17,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239313413] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:17,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [363224490] [2021-11-07 01:30:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:17,498 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:17,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:17,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:17,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:30:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:30:19,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:20,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:21,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [363224490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:21,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:21,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:30:21,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394948028] [2021-11-07 01:30:21,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:30:21,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:30:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:21,957 INFO L87 Difference]: Start difference. First operand 13827 states and 19660 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:22,437 INFO L93 Difference]: Finished difference Result 13827 states and 19660 transitions. [2021-11-07 01:30:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 133 [2021-11-07 01:30:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:22,495 INFO L225 Difference]: With dead ends: 13827 [2021-11-07 01:30:22,495 INFO L226 Difference]: Without dead ends: 13825 [2021-11-07 01:30:22,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13825 states. [2021-11-07 01:30:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13825 to 13825. [2021-11-07 01:30:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13825 states, 13415 states have (on average 1.4009690644800596) internal successors, (18794), 13446 states have internal predecessors, (18794), 288 states have call successors, (288), 120 states have call predecessors, (288), 120 states have return successors, (576), 276 states have call predecessors, (576), 288 states have call successors, (576) [2021-11-07 01:30:23,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19658 transitions. [2021-11-07 01:30:23,263 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19658 transitions. Word has length 133 [2021-11-07 01:30:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:23,263 INFO L470 AbstractCegarLoop]: Abstraction has 13825 states and 19658 transitions. [2021-11-07 01:30:23,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19658 transitions. [2021-11-07 01:30:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-07 01:30:23,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:23,272 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:30:23,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:23,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:23,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:23,692 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash 265401198, now seen corresponding path program 1 times [2021-11-07 01:30:23,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:23,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901751465] [2021-11-07 01:30:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:23,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:23,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:23,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:30:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:26,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:26,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 01:30:27,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:27,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901751465] [2021-11-07 01:30:27,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901751465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:27,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141284774] [2021-11-07 01:30:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:27,354 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:27,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:27,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:30:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2079 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:30:29,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:30,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:31,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1141284774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:31,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:31,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:30:31,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956457812] [2021-11-07 01:30:31,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:30:31,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:30:31,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:31,628 INFO L87 Difference]: Start difference. First operand 13825 states and 19658 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:32,101 INFO L93 Difference]: Finished difference Result 13825 states and 19658 transitions. [2021-11-07 01:30:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 134 [2021-11-07 01:30:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:32,152 INFO L225 Difference]: With dead ends: 13825 [2021-11-07 01:30:32,152 INFO L226 Difference]: Without dead ends: 13817 [2021-11-07 01:30:32,158 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13817 states. [2021-11-07 01:30:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13817 to 13817. [2021-11-07 01:30:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13817 states, 13408 states have (on average 1.4010292362768497) internal successors, (18785), 13438 states have internal predecessors, (18785), 288 states have call successors, (288), 120 states have call predecessors, (288), 120 states have return successors, (576), 276 states have call predecessors, (576), 288 states have call successors, (576) [2021-11-07 01:30:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13817 states to 13817 states and 19649 transitions. [2021-11-07 01:30:32,745 INFO L78 Accepts]: Start accepts. Automaton has 13817 states and 19649 transitions. Word has length 134 [2021-11-07 01:30:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:32,746 INFO L470 AbstractCegarLoop]: Abstraction has 13817 states and 19649 transitions. [2021-11-07 01:30:32,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 13817 states and 19649 transitions. [2021-11-07 01:30:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 01:30:32,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:32,798 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:32,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:33,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:33,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:33,212 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1699316528, now seen corresponding path program 1 times [2021-11-07 01:30:33,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:33,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835772155] [2021-11-07 01:30:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:33,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:33,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:33,218 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:30:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:36,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:36,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:30:36,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:30:37,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:37,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835772155] [2021-11-07 01:30:37,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835772155] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:37,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1970083887] [2021-11-07 01:30:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:37,884 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:37,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:37,885 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:37,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:30:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:40,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:30:40,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:41,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 01:30:42,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1970083887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:42,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:42,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:30:42,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608212934] [2021-11-07 01:30:42,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:30:42,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:30:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:42,095 INFO L87 Difference]: Start difference. First operand 13817 states and 19649 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:30:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:43,553 INFO L93 Difference]: Finished difference Result 31327 states and 44737 transitions. [2021-11-07 01:30:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:43,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 223 [2021-11-07 01:30:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:43,634 INFO L225 Difference]: With dead ends: 31327 [2021-11-07 01:30:43,634 INFO L226 Difference]: Without dead ends: 17721 [2021-11-07 01:30:43,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2021-11-07 01:30:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 17713. [2021-11-07 01:30:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17713 states, 17062 states have (on average 1.4053452115812917) internal successors, (23978), 17112 states have internal predecessors, (23978), 450 states have call successors, (450), 200 states have call predecessors, (450), 200 states have return successors, (900), 430 states have call predecessors, (900), 450 states have call successors, (900) [2021-11-07 01:30:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17713 states to 17713 states and 25328 transitions. [2021-11-07 01:30:44,821 INFO L78 Accepts]: Start accepts. Automaton has 17713 states and 25328 transitions. Word has length 223 [2021-11-07 01:30:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:44,822 INFO L470 AbstractCegarLoop]: Abstraction has 17713 states and 25328 transitions. [2021-11-07 01:30:44,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:30:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 17713 states and 25328 transitions. [2021-11-07 01:30:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 01:30:44,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:44,872 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:44,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:45,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:45,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:45,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:30:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1940526788, now seen corresponding path program 2 times [2021-11-07 01:30:45,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:45,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419742218] [2021-11-07 01:30:45,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:30:45,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:45,303 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:45,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:32:13,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:32:13,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:32:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:32:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:32:14,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:32:15,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:32:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419742218] [2021-11-07 01:32:15,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419742218] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:15,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [764295259] [2021-11-07 01:32:15,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:32:15,946 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:32:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:32:15,952 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:32:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:39:33,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:39:33,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:39:34,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:39:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:39:35,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:39:35,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [764295259] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:35,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:39:35,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:39:35,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145002408] [2021-11-07 01:39:35,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:39:35,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:39:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:39:35,737 INFO L87 Difference]: Start difference. First operand 17713 states and 25328 transitions. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:39:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:48,542 INFO L93 Difference]: Finished difference Result 35351 states and 50641 transitions. [2021-11-07 01:39:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:39:48,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 223 [2021-11-07 01:39:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:48,622 INFO L225 Difference]: With dead ends: 35351 [2021-11-07 01:39:48,623 INFO L226 Difference]: Without dead ends: 17849 [2021-11-07 01:39:48,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:39:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17849 states. [2021-11-07 01:39:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17849 to 17815. [2021-11-07 01:39:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17815 states, 17164 states have (on average 1.4029363784665578) internal successors, (24080), 17214 states have internal predecessors, (24080), 450 states have call successors, (450), 200 states have call predecessors, (450), 200 states have return successors, (900), 430 states have call predecessors, (900), 450 states have call successors, (900) [2021-11-07 01:39:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17815 states to 17815 states and 25430 transitions. [2021-11-07 01:39:49,865 INFO L78 Accepts]: Start accepts. Automaton has 17815 states and 25430 transitions. Word has length 223 [2021-11-07 01:39:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:49,866 INFO L470 AbstractCegarLoop]: Abstraction has 17815 states and 25430 transitions. [2021-11-07 01:39:49,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:39:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 17815 states and 25430 transitions. [2021-11-07 01:39:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 01:39:49,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:49,960 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:39:50,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:50,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:50,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:50,381 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:39:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash 277103610, now seen corresponding path program 1 times [2021-11-07 01:39:50,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:50,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773709144] [2021-11-07 01:39:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:50,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:50,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:50,387 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:39:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:53,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:39:53,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:39:54,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:39:55,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:55,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773709144] [2021-11-07 01:39:55,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773709144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:39:55,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1876562763] [2021-11-07 01:39:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:55,797 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:39:55,798 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:39:55,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-07 01:39:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:59,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:39:59,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:39:59,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:40:00,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1876562763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:00,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:00,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:40:00,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060798941] [2021-11-07 01:40:00,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:00,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:00,260 INFO L87 Difference]: Start difference. First operand 17815 states and 25430 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 01:40:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:05,196 INFO L93 Difference]: Finished difference Result 52783 states and 78094 transitions. [2021-11-07 01:40:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 223 [2021-11-07 01:40:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:05,368 INFO L225 Difference]: With dead ends: 52783 [2021-11-07 01:40:05,369 INFO L226 Difference]: Without dead ends: 35179 [2021-11-07 01:40:05,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35179 states. [2021-11-07 01:40:07,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35179 to 35175. [2021-11-07 01:40:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35175 states, 33874 states have (on average 1.3860778177953592) internal successors, (46952), 33974 states have internal predecessors, (46952), 900 states have call successors, (900), 400 states have call predecessors, (900), 400 states have return successors, (2700), 860 states have call predecessors, (2700), 900 states have call successors, (2700) [2021-11-07 01:40:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35175 states to 35175 states and 50552 transitions. [2021-11-07 01:40:07,572 INFO L78 Accepts]: Start accepts. Automaton has 35175 states and 50552 transitions. Word has length 223 [2021-11-07 01:40:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:07,572 INFO L470 AbstractCegarLoop]: Abstraction has 35175 states and 50552 transitions. [2021-11-07 01:40:07,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 01:40:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 35175 states and 50552 transitions. [2021-11-07 01:40:07,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 01:40:07,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:07,652 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:07,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:07,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:08,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:08,068 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:40:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash 863909624, now seen corresponding path program 1 times [2021-11-07 01:40:08,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:08,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165363209] [2021-11-07 01:40:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:08,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:08,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:08,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:08,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:40:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:11,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:40:12,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 01:40:13,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:13,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165363209] [2021-11-07 01:40:13,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165363209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:13,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1984535586] [2021-11-07 01:40:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:13,703 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:13,709 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:13,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:40:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:17,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2404 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:40:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:40:18,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 01:40:19,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1984535586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:19,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:19,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5] total 13 [2021-11-07 01:40:19,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315356392] [2021-11-07 01:40:19,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:40:19,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:40:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:40:19,656 INFO L87 Difference]: Start difference. First operand 35175 states and 50552 transitions. Second operand has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 01:40:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:22,057 INFO L93 Difference]: Finished difference Result 72099 states and 106781 transitions. [2021-11-07 01:40:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:40:22,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 223 [2021-11-07 01:40:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:22,227 INFO L225 Difference]: With dead ends: 72099 [2021-11-07 01:40:22,227 INFO L226 Difference]: Without dead ends: 37135 [2021-11-07 01:40:22,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:40:22,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37135 states. [2021-11-07 01:40:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37135 to 35255. [2021-11-07 01:40:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35255 states, 33954 states have (on average 1.3857572009188903) internal successors, (47052), 34054 states have internal predecessors, (47052), 900 states have call successors, (900), 400 states have call predecessors, (900), 400 states have return successors, (2700), 860 states have call predecessors, (2700), 900 states have call successors, (2700) [2021-11-07 01:40:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35255 states to 35255 states and 50652 transitions. [2021-11-07 01:40:24,580 INFO L78 Accepts]: Start accepts. Automaton has 35255 states and 50652 transitions. Word has length 223 [2021-11-07 01:40:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:24,581 INFO L470 AbstractCegarLoop]: Abstraction has 35255 states and 50652 transitions. [2021-11-07 01:40:24,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 01:40:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35255 states and 50652 transitions. [2021-11-07 01:40:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-07 01:40:24,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:24,656 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:24,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:24,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-07 01:40:25,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,081 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:40:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1477812964, now seen corresponding path program 1 times [2021-11-07 01:40:25,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:25,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438233869] [2021-11-07 01:40:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:25,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:25,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:25,087 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:25,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-07 01:40:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:29,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:40:29,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-07 01:40:30,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-07 01:40:31,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:40:31,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438233869] [2021-11-07 01:40:31,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438233869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:40:31,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417969079] [2021-11-07 01:40:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:40:31,430 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:31,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:40:31,432 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:40:31,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-07 01:40:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:40:35,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:40:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:40:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:36,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:40:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 01:40:37,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [417969079] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:40:37,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:40:37,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:40:37,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999640883] [2021-11-07 01:40:37,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:40:37,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:40:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:40:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:37,351 INFO L87 Difference]: Start difference. First operand 35255 states and 50652 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:40:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:40:40,355 INFO L93 Difference]: Finished difference Result 76611 states and 110029 transitions. [2021-11-07 01:40:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:40:40,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 247 [2021-11-07 01:40:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:40:40,521 INFO L225 Difference]: With dead ends: 76611 [2021-11-07 01:40:40,521 INFO L226 Difference]: Without dead ends: 41567 [2021-11-07 01:40:40,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 977 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:40:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41567 states. [2021-11-07 01:40:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41567 to 41359. [2021-11-07 01:40:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41359 states, 39854 states have (on average 1.3862096652782656) internal successors, (55246), 39974 states have internal predecessors, (55246), 1024 states have call successors, (1024), 480 states have call predecessors, (1024), 480 states have return successors, (3072), 976 states have call predecessors, (3072), 1024 states have call successors, (3072) [2021-11-07 01:40:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41359 states to 41359 states and 59342 transitions. [2021-11-07 01:40:43,563 INFO L78 Accepts]: Start accepts. Automaton has 41359 states and 59342 transitions. Word has length 247 [2021-11-07 01:40:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:40:43,564 INFO L470 AbstractCegarLoop]: Abstraction has 41359 states and 59342 transitions. [2021-11-07 01:40:43,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-07 01:40:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 41359 states and 59342 transitions. [2021-11-07 01:40:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-07 01:40:43,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:40:43,793 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:40:43,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:44,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-07 01:40:44,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:40:44,216 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:40:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:40:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1671964428, now seen corresponding path program 2 times [2021-11-07 01:40:44,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:40:44,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202389766] [2021-11-07 01:40:44,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:40:44,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:40:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:40:44,221 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:40:44,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79c344e9-f0c1-4b75-a25a-53b14af5682d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process