./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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 f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:51,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:51,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:51,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:51,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:51,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:51,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:51,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:51,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:51,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:51,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:51,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:51,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:51,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:51,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:51,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:51,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:51,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:51,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:51,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:51,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:51,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:51,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:51,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:51,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:51,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:51,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:51,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:51,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:51,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:51,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:51,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:51,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:51,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:51,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:51,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:51,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:51,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:51,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:51,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:51,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:51,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:51,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:51,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:51,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:51,946 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:51,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:51,947 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:51,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:51,948 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:51,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:51,948 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:51,949 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:51,950 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:51,950 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:51,950 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:51,951 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:51,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:51,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:51,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:51,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:51,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:51,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:51,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:51,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:51,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:51,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:51,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:51,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:51,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:51,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:51,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:51,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:51,956 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:51,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:51,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:51,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:51,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:51,957 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2021-11-07 00:53:52,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:52,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:52,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:52,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:52,323 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:52,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-07 00:53:52,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/d5379f743/fac0ff8ec3214bf0bff2da84485f7e99/FLAGff1e3cbd7 [2021-11-07 00:53:53,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:53,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-07 00:53:53,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/d5379f743/fac0ff8ec3214bf0bff2da84485f7e99/FLAGff1e3cbd7 [2021-11-07 00:53:53,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/d5379f743/fac0ff8ec3214bf0bff2da84485f7e99 [2021-11-07 00:53:53,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:53,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:53,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:53,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:53,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:53,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:53" (1/1) ... [2021-11-07 00:53:53,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed8f125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:53, skipping insertion in model container [2021-11-07 00:53:53,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:53" (1/1) ... [2021-11-07 00:53:53,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:53,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:55,044 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 00:53:55,421 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 00:53:55,494 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 00:53:55,506 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 00:53:55,520 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 00:53:55,559 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 00:53:55,638 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 00:53:55,699 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,701 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 00:53:55,708 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 00:53:55,727 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 00:53:55,727 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 00:53:55,728 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 00:53:55,740 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 00:53:55,752 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 00:53:55,760 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 00:53:55,841 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 00:53:55,848 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 00:53:55,868 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 00:53:55,869 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 00:53:55,890 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 00:53:55,892 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 00:53:55,893 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 00:53:55,894 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 00:53:55,939 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 00:53:55,940 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,942 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,943 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,950 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 00:53:55,952 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:53:55,958 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 00:53:55,961 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 00:53:55,962 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 00:53:55,963 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 00:53:55,964 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 00:53:55,965 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 00:53:55,966 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 00:53:56,152 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 00:53:56,158 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 00:53:56,164 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 00:53:56,165 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 00:53:56,170 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 00:53:56,172 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 00:53:56,174 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 00:53:56,181 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 00:53:56,189 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 00:53:56,217 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 00:53:56,223 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 00:53:56,235 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 00:53:56,302 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-07 00:53:56,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:56,390 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 00:53:56,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44d8458c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:56, skipping insertion in model container [2021-11-07 00:53:56,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:56,391 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:56,393 INFO L168 Benchmark]: Toolchain (without parser) took 2646.89 ms. Allocated memory was 104.9 MB in the beginning and 148.9 MB in the end (delta: 44.0 MB). Free memory was 76.5 MB in the beginning and 84.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:56,394 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 83.7 MB in the beginning and 83.5 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:56,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2644.19 ms. Allocated memory was 104.9 MB in the beginning and 148.9 MB in the end (delta: 44.0 MB). Free memory was 76.3 MB in the beginning and 84.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:56,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 83.7 MB in the beginning and 83.5 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2644.19 ms. Allocated memory was 104.9 MB in the beginning and 148.9 MB in the end (delta: 44.0 MB). Free memory was 76.3 MB in the beginning and 84.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4022]: 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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 f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:58,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:58,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:58,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:58,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:58,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:58,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:58,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:58,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:58,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:58,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:58,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:58,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:58,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:58,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:58,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:58,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:58,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:58,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:58,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:58,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:58,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:58,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:58,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:58,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:58,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:58,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:58,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:58,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:58,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:58,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:58,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:58,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:58,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:58,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:58,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:59,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:59,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:59,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:59,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:59,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:59,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:59,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:59,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:59,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:59,057 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:59,058 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:59,058 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:59,058 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:59,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:59,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:59,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:59,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:59,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:59,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:59,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:59,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:59,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:59,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:59,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:59,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:59,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:59,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:59,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:59,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:59,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:59,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:59,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:59,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:59,066 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:59,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:59,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:59,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:59,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:59,067 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2021-11-07 00:53:59,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:59,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:59,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:59,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:59,539 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:59,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-07 00:53:59,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/088e7c734/0eb87d8a22e54819beda9c7d9997aa4f/FLAGdad7c12d3 [2021-11-07 00:54:00,666 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:00,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-07 00:54:00,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/088e7c734/0eb87d8a22e54819beda9c7d9997aa4f/FLAGdad7c12d3 [2021-11-07 00:54:01,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/data/088e7c734/0eb87d8a22e54819beda9c7d9997aa4f [2021-11-07 00:54:01,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:01,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:01,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:01,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:01,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:01,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:01" (1/1) ... [2021-11-07 00:54:01,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a74167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:01, skipping insertion in model container [2021-11-07 00:54:01,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:01" (1/1) ... [2021-11-07 00:54:01,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:01,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:03,689 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-07 00:54:03,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:03,774 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:54:03,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:04,263 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-07 00:54:04,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:04,299 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:04,760 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_a57d1380-1c4d-48c6-86fa-813dcecbeac5/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2021-11-07 00:54:04,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:04,941 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:04,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04 WrapperNode [2021-11-07 00:54:04,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:04,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:04,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:04,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:04,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:05,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:05,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:05,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:05,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:05,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:06,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:06,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:06,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:06,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:06,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:06,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:06,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (1/1) ... [2021-11-07 00:54:06,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:06,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:06,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:06,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:54:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:54:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:54:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:54:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:54:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:54:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:54:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:54:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:54:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:54:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:54:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:54:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:54:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:54:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:54:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:54:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:54:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:54:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2021-11-07 00:54:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2021-11-07 00:54:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:54:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:54:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:54:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~TO~C_UINT [2021-11-07 00:54:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~TO~C_UINT [2021-11-07 00:54:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:54:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:07,278 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,320 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,327 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,330 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,352 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,358 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,383 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,387 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:54:07,413 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 00:57:03,198 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1046: assume false; [2021-11-07 00:57:03,198 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1047: assume !false; [2021-11-07 00:57:03,199 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##503: assume !false; [2021-11-07 00:57:03,199 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##502: assume false; [2021-11-07 00:57:03,199 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##65: assume false; [2021-11-07 00:57:03,199 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume !false; [2021-11-07 00:57:03,200 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##589: assume false; [2021-11-07 00:57:03,200 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##590: assume !false; [2021-11-07 00:57:03,200 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##627: assume !false; [2021-11-07 00:57:03,200 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##626: assume false; [2021-11-07 00:57:03,201 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1663: assume false; [2021-11-07 00:57:03,201 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1664: assume !false; [2021-11-07 00:57:03,201 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1409: assume false; [2021-11-07 00:57:03,202 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1410: assume !false; [2021-11-07 00:57:03,202 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1462: assume false; [2021-11-07 00:57:03,202 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1463: assume !false; [2021-11-07 00:57:03,202 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##958: assume !false; [2021-11-07 00:57:03,203 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##957: assume false; [2021-11-07 00:57:03,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:57:03,228 INFO L299 CfgBuilder]: Removed 1773 assume(true) statements. [2021-11-07 00:57:03,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:03 BoogieIcfgContainer [2021-11-07 00:57:03,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:57:03,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:57:03,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:57:03,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:57:03,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:01" (1/3) ... [2021-11-07 00:57:03,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a15d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:03, skipping insertion in model container [2021-11-07 00:57:03,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:04" (2/3) ... [2021-11-07 00:57:03,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125a15d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:03, skipping insertion in model container [2021-11-07 00:57:03,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:03" (3/3) ... [2021-11-07 00:57:03,241 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2021-11-07 00:57:03,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:57:03,246 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 00:57:03,302 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:57:03,307 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 00:57:03,308 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 00:57:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 1914 states, 1903 states have (on average 1.4009458749343142) internal successors, (2666), 1908 states have internal predecessors, (2666), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-07 00:57:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 00:57:03,361 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:03,362 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:03,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:57:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -86151642, now seen corresponding path program 1 times [2021-11-07 00:57:03,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:03,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902764944] [2021-11-07 00:57:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:03,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:03,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:03,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:03,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:57:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:08,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:57:08,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:08,995 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 00:57:08,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:09,160 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 00:57:09,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:09,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902764944] [2021-11-07 00:57:09,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902764944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:09,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:09,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:57:09,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731296481] [2021-11-07 00:57:09,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:57:09,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:57:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:57:09,189 INFO L87 Difference]: Start difference. First operand has 1914 states, 1903 states have (on average 1.4009458749343142) internal successors, (2666), 1908 states have internal predecessors, (2666), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 00:57:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:09,526 INFO L93 Difference]: Finished difference Result 5669 states and 7923 transitions. [2021-11-07 00:57:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:57:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-11-07 00:57:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:09,571 INFO L225 Difference]: With dead ends: 5669 [2021-11-07 00:57:09,574 INFO L226 Difference]: Without dead ends: 3738 [2021-11-07 00:57:09,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:57:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-11-07 00:57:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3730. [2021-11-07 00:57:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3715 states have (on average 1.363391655450875) internal successors, (5065), 3719 states have internal predecessors, (5065), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:57:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5077 transitions. [2021-11-07 00:57:09,828 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5077 transitions. Word has length 13 [2021-11-07 00:57:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:09,828 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5077 transitions. [2021-11-07 00:57:09,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 00:57:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5077 transitions. [2021-11-07 00:57:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 00:57:09,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:09,837 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] [2021-11-07 00:57:09,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:10,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:10,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:57:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 970211147, now seen corresponding path program 1 times [2021-11-07 00:57:10,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:10,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539296472] [2021-11-07 00:57:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:10,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:10,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:10,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:10,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:57:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:15,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:16,288 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 00:57:16,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:16,673 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 00:57:16,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:16,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539296472] [2021-11-07 00:57:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539296472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:16,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:16,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:57:16,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499354428] [2021-11-07 00:57:16,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:57:16,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:57:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:16,678 INFO L87 Difference]: Start difference. First operand 3730 states and 5077 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 00:57:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:16,937 INFO L93 Difference]: Finished difference Result 7406 states and 10086 transitions. [2021-11-07 00:57:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 65 [2021-11-07 00:57:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:16,961 INFO L225 Difference]: With dead ends: 7406 [2021-11-07 00:57:16,961 INFO L226 Difference]: Without dead ends: 3730 [2021-11-07 00:57:16,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:57:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2021-11-07 00:57:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3730. [2021-11-07 00:57:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3715 states have (on average 1.363122476446837) internal successors, (5064), 3719 states have internal predecessors, (5064), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:57:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5076 transitions. [2021-11-07 00:57:17,210 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5076 transitions. Word has length 65 [2021-11-07 00:57:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:17,211 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5076 transitions. [2021-11-07 00:57:17,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 00:57:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5076 transitions. [2021-11-07 00:57:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 00:57:17,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:17,217 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] [2021-11-07 00:57:17,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:17,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:17,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:57:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1345747310, now seen corresponding path program 1 times [2021-11-07 00:57:17,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:17,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636478734] [2021-11-07 00:57:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:17,442 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:17,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:17,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:57:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:23,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1820 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 00:57:23,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:23,591 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 00:57:23,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:24,269 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 00:57:24,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:24,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636478734] [2021-11-07 00:57:24,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636478734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:24,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:24,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 00:57:24,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162838018] [2021-11-07 00:57:24,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:57:24,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:57:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:24,272 INFO L87 Difference]: Start difference. First operand 3730 states and 5076 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 00:57:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:34,345 INFO L93 Difference]: Finished difference Result 17354 states and 23783 transitions. [2021-11-07 00:57:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:57:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 69 [2021-11-07 00:57:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:34,455 INFO L225 Difference]: With dead ends: 17354 [2021-11-07 00:57:34,455 INFO L226 Difference]: Without dead ends: 13632 [2021-11-07 00:57:34,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 00:57:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13632 states. [2021-11-07 00:57:34,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13632 to 3730. [2021-11-07 00:57:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3715 states have (on average 1.3628532974427994) internal successors, (5063), 3719 states have internal predecessors, (5063), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:57:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 5075 transitions. [2021-11-07 00:57:34,938 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 5075 transitions. Word has length 69 [2021-11-07 00:57:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:34,939 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 5075 transitions. [2021-11-07 00:57:34,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 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 00:57:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 5075 transitions. [2021-11-07 00:57:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 00:57:34,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:34,943 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] [2021-11-07 00:57:35,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:35,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:35,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:57:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash -218503297, now seen corresponding path program 1 times [2021-11-07 00:57:35,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:35,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465314519] [2021-11-07 00:57:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:35,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:35,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:35,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:57:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:41,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:57:41,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:41,466 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 00:57:41,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:41,945 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 00:57:41,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:41,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465314519] [2021-11-07 00:57:41,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465314519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:41,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:41,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 00:57:41,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094356364] [2021-11-07 00:57:41,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:57:41,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:57:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:57:41,949 INFO L87 Difference]: Start difference. First operand 3730 states and 5075 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 00:57:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:42,459 INFO L93 Difference]: Finished difference Result 7410 states and 10088 transitions. [2021-11-07 00:57:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:57:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 72 [2021-11-07 00:57:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:42,485 INFO L225 Difference]: With dead ends: 7410 [2021-11-07 00:57:42,486 INFO L226 Difference]: Without dead ends: 3723 [2021-11-07 00:57:42,493 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:57:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-11-07 00:57:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3723. [2021-11-07 00:57:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3708 states have (on average 1.3621898597626754) internal successors, (5051), 3712 states have internal predecessors, (5051), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:57:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5063 transitions. [2021-11-07 00:57:42,722 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5063 transitions. Word has length 72 [2021-11-07 00:57:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:42,724 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 5063 transitions. [2021-11-07 00:57:42,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 00:57:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5063 transitions. [2021-11-07 00:57:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 00:57:42,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:42,730 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] [2021-11-07 00:57:42,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:42,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:42,944 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 00:57:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -638820295, now seen corresponding path program 1 times [2021-11-07 00:57:42,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603294073] [2021-11-07 00:57:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:42,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:42,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:42,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:42,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:57:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:48,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 00:57:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:49,233 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 00:57:49,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:49,658 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 00:57:49,659 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:49,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603294073] [2021-11-07 00:57:49,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603294073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:49,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:49,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:57:49,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305972700] [2021-11-07 00:57:49,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:57:49,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:57:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:57:49,661 INFO L87 Difference]: Start difference. First operand 3723 states and 5063 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:57:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:49,926 INFO L93 Difference]: Finished difference Result 7418 states and 10094 transitions. [2021-11-07 00:57:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 91 [2021-11-07 00:57:49,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:49,961 INFO L225 Difference]: With dead ends: 7418 [2021-11-07 00:57:49,962 INFO L226 Difference]: Without dead ends: 3723 [2021-11-07 00:57:49,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:57:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-11-07 00:57:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3723. [2021-11-07 00:57:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3708 states have (on average 1.3619201725997843) internal successors, (5050), 3712 states have internal predecessors, (5050), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:57:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5062 transitions. [2021-11-07 00:57:50,304 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5062 transitions. Word has length 91 [2021-11-07 00:57:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:50,305 INFO L470 AbstractCegarLoop]: Abstraction has 3723 states and 5062 transitions. [2021-11-07 00:57:50,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 00:57:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5062 transitions. [2021-11-07 00:57:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 00:57:50,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:50,308 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] [2021-11-07 00:57:50,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:50,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:50,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:57:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash -6268720, now seen corresponding path program 1 times [2021-11-07 00:57:50,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:50,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743354663] [2021-11-07 00:57:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:50,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:50,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:50,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:50,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:57:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:56,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:57:56,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:56,856 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 00:57:56,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:57,676 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 00:57:57,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:57,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743354663] [2021-11-07 00:57:57,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743354663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:57,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:57,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 00:57:57,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926205370] [2021-11-07 00:57:57,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 00:57:57,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 00:57:57,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:57:57,679 INFO L87 Difference]: Start difference. First operand 3723 states and 5062 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 00:58:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:29,757 INFO L93 Difference]: Finished difference Result 143243 states and 199269 transitions. [2021-11-07 00:58:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 00:58:29,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 93 [2021-11-07 00:58:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:30,331 INFO L225 Difference]: With dead ends: 143243 [2021-11-07 00:58:30,331 INFO L226 Difference]: Without dead ends: 139540 [2021-11-07 00:58:30,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=590, Invalid=2166, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 00:58:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139540 states. [2021-11-07 00:58:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139540 to 7388. [2021-11-07 00:58:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7388 states, 7363 states have (on average 1.3622164878446286) internal successors, (10030), 7367 states have internal predecessors, (10030), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 00:58:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 10054 transitions. [2021-11-07 00:58:32,918 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 10054 transitions. Word has length 93 [2021-11-07 00:58:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 7388 states and 10054 transitions. [2021-11-07 00:58:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 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 00:58:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 10054 transitions. [2021-11-07 00:58:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 00:58:32,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:32,923 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] [2021-11-07 00:58:32,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:33,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:33,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:58:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash 693013822, now seen corresponding path program 1 times [2021-11-07 00:58:33,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:33,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776622262] [2021-11-07 00:58:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:33,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:33,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:58:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:38,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 00:58:38,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:39,381 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 00:58:39,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:39,961 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 00:58:39,962 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:39,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776622262] [2021-11-07 00:58:39,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776622262] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:39,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:39,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 00:58:39,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153808710] [2021-11-07 00:58:39,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:58:39,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:58:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:58:39,964 INFO L87 Difference]: Start difference. First operand 7388 states and 10054 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 00:58:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:56,495 INFO L93 Difference]: Finished difference Result 73786 states and 101584 transitions. [2021-11-07 00:58:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 00:58:56,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 96 [2021-11-07 00:58:56,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:56,822 INFO L225 Difference]: With dead ends: 73786 [2021-11-07 00:58:56,822 INFO L226 Difference]: Without dead ends: 66446 [2021-11-07 00:58:56,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-07 00:58:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66446 states. [2021-11-07 00:58:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66446 to 7396. [2021-11-07 00:58:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7396 states, 7371 states have (on average 1.3618233618233617) internal successors, (10038), 7375 states have internal predecessors, (10038), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 00:58:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7396 states to 7396 states and 10062 transitions. [2021-11-07 00:58:58,600 INFO L78 Accepts]: Start accepts. Automaton has 7396 states and 10062 transitions. Word has length 96 [2021-11-07 00:58:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:58,600 INFO L470 AbstractCegarLoop]: Abstraction has 7396 states and 10062 transitions. [2021-11-07 00:58:58,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 00:58:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7396 states and 10062 transitions. [2021-11-07 00:58:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 00:58:58,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:58,606 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] [2021-11-07 00:58:58,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:58,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:58,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:58:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash 275617216, now seen corresponding path program 1 times [2021-11-07 00:58:58,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:58,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480690550] [2021-11-07 00:58:58,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:58,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:58,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:58,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:58,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:59:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:05,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:05,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:05,706 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 00:59:05,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:05,963 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 00:59:05,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:05,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480690550] [2021-11-07 00:59:05,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480690550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:05,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:05,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:59:05,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117969264] [2021-11-07 00:59:05,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:59:05,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:59:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:59:05,966 INFO L87 Difference]: Start difference. First operand 7396 states and 10062 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 00:59:08,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:08,976 INFO L93 Difference]: Finished difference Result 29190 states and 39782 transitions. [2021-11-07 00:59:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:59:08,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 96 [2021-11-07 00:59:08,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:09,015 INFO L225 Difference]: With dead ends: 29190 [2021-11-07 00:59:09,015 INFO L226 Difference]: Without dead ends: 21872 [2021-11-07 00:59:09,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 188 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 00:59:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21872 states. [2021-11-07 00:59:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21872 to 7452. [2021-11-07 00:59:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7427 states have (on average 1.3612494950854988) internal successors, (10110), 7431 states have internal predecessors, (10110), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 00:59:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 10134 transitions. [2021-11-07 00:59:10,457 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 10134 transitions. Word has length 96 [2021-11-07 00:59:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:10,458 INFO L470 AbstractCegarLoop]: Abstraction has 7452 states and 10134 transitions. [2021-11-07 00:59:10,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 00:59:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 10134 transitions. [2021-11-07 00:59:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 00:59:10,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:10,465 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, 1, 1] [2021-11-07 00:59:10,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:10,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:10,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:59:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:10,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1743765905, now seen corresponding path program 1 times [2021-11-07 00:59:10,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:10,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686623232] [2021-11-07 00:59:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:10,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:10,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:10,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:59:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:17,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:59:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:18,415 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 00:59:18,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:19,241 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 00:59:19,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:19,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686623232] [2021-11-07 00:59:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686623232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:19,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:19,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:59:19,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803607187] [2021-11-07 00:59:19,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:59:19,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:59:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:19,244 INFO L87 Difference]: Start difference. First operand 7452 states and 10134 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 00:59:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:22,812 INFO L93 Difference]: Finished difference Result 11155 states and 15161 transitions. [2021-11-07 00:59:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:59:22,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 99 [2021-11-07 00:59:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:22,824 INFO L225 Difference]: With dead ends: 11155 [2021-11-07 00:59:22,824 INFO L226 Difference]: Without dead ends: 7465 [2021-11-07 00:59:22,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:59:22,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7465 states. [2021-11-07 00:59:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7465 to 7452. [2021-11-07 00:59:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7427 states have (on average 1.3600377002827522) internal successors, (10101), 7431 states have internal predecessors, (10101), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 00:59:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 10125 transitions. [2021-11-07 00:59:24,183 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 10125 transitions. Word has length 99 [2021-11-07 00:59:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:24,184 INFO L470 AbstractCegarLoop]: Abstraction has 7452 states and 10125 transitions. [2021-11-07 00:59:24,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 00:59:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 10125 transitions. [2021-11-07 00:59:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 00:59:24,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:24,191 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, 1, 1, 1] [2021-11-07 00:59:24,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:24,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:24,408 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:59:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 99252720, now seen corresponding path program 1 times [2021-11-07 00:59:24,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:24,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753763983] [2021-11-07 00:59:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:24,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:24,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:24,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:24,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 00:59:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:31,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1970 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 00:59:31,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:31,449 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 00:59:31,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:31,835 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 00:59:31,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:31,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753763983] [2021-11-07 00:59:31,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753763983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:59:31,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:59:31,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:59:31,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356617706] [2021-11-07 00:59:31,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:59:31,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:59:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:59:31,837 INFO L87 Difference]: Start difference. First operand 7452 states and 10125 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:32,331 INFO L93 Difference]: Finished difference Result 7470 states and 10138 transitions. [2021-11-07 00:59:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:59:32,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-07 00:59:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:32,337 INFO L225 Difference]: With dead ends: 7470 [2021-11-07 00:59:32,337 INFO L226 Difference]: Without dead ends: 3754 [2021-11-07 00:59:32,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:59:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-11-07 00:59:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3754. [2021-11-07 00:59:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3739 states have (on average 1.358117143621289) internal successors, (5078), 3743 states have internal predecessors, (5078), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 00:59:32,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5090 transitions. [2021-11-07 00:59:32,927 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5090 transitions. Word has length 100 [2021-11-07 00:59:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:32,928 INFO L470 AbstractCegarLoop]: Abstraction has 3754 states and 5090 transitions. [2021-11-07 00:59:32,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:59:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5090 transitions. [2021-11-07 00:59:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 00:59:32,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:32,933 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, 1, 1, 1] [2021-11-07 00:59:33,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:33,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:33,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 00:59:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1032385025, now seen corresponding path program 1 times [2021-11-07 00:59:33,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:33,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871133242] [2021-11-07 00:59:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:33,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:33,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:33,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a57d1380-1c4d-48c6-86fa-813dcecbeac5/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process