./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF --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 cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:47,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:47,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:47,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:47,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:47,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:47,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:47,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:47,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:47,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:47,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:47,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:47,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:47,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:47,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:47,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:47,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:47,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:47,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:47,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:47,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:47,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:47,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:47,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:47,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:47,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:47,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:47,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:47,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:47,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:47,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:47,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:47,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:47,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:47,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:47,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:47,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:47,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:47,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:47,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:47,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:47,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:39:47,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:47,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:47,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:47,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:47,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:47,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:47,803 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:47,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:39:47,803 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:47,803 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:47,805 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:39:47,805 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:39:47,805 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:47,806 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:39:47,806 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:39:47,806 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:39:47,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:47,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:39:47,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:47,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:47,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:47,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:47,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:39:47,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:47,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:47,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:47,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:47,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:47,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:47,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:47,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:47,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:47,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:39:47,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:39:47,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:47,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:47,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:47,813 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 [2021-11-13 02:39:48,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:48,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:48,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:48,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:48,243 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:48,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-13 02:39:48,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/cb3c25d6c/d49b974ff0654aa6b754308f608ef626/FLAG82b742d5e [2021-11-13 02:39:49,528 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:39:49,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-13 02:39:49,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/cb3c25d6c/d49b974ff0654aa6b754308f608ef626/FLAG82b742d5e [2021-11-13 02:39:49,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/cb3c25d6c/d49b974ff0654aa6b754308f608ef626 [2021-11-13 02:39:49,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:39:49,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:39:49,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:49,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:39:49,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:39:49,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:49" (1/1) ... [2021-11-13 02:39:49,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0abc6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:49, skipping insertion in model container [2021-11-13 02:39:49,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:49" (1/1) ... [2021-11-13 02:39:49,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:39:50,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:39:51,918 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:51,934 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:51,935 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:51,939 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:51,941 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,618 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,630 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,639 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,652 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,664 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,742 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,757 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,766 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,774 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,782 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,789 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,796 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,804 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,813 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,843 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,974 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,983 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:52,995 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,003 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,012 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,030 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,037 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,044 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,050 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,057 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,063 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,069 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,077 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,084 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,091 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,098 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,100 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,108 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,115 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,121 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,128 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,135 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,141 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,148 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,154 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,161 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,168 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,169 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,170 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,200 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,210 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,212 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,220 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,221 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,226 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,227 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,228 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 02:39:53,508 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2021-11-13 02:39:53,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:53,694 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) [2021-11-13 02:39:53,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dad5082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:53, skipping insertion in model container [2021-11-13 02:39:53,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:53,696 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:39:53,698 INFO L158 Benchmark]: Toolchain (without parser) took 3900.54ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 49.7MB in the end (delta: 33.7MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. [2021-11-13 02:39:53,698 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:39:53,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3897.39ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 49.7MB in the end (delta: 33.3MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. [2021-11-13 02:39:53,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 58.2MB in the beginning and 58.1MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3897.39ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 49.7MB in the end (delta: 33.3MB). Peak memory consumption was 86.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4263]: 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF --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 cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:56,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:56,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:56,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:56,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:56,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:56,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:56,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:56,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:56,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:56,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:56,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:56,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:56,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:56,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:56,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:56,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:56,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:56,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:56,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:56,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:56,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:56,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:56,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:56,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:56,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:56,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:56,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:56,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:56,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:56,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:56,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:56,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:56,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:56,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:56,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:56,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:56,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:56,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:56,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:56,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:56,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:39:56,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:56,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:56,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:56,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:56,760 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:56,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:56,760 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:56,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:56,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:56,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:56,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:56,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:56,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:56,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:56,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:56,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:39:56,766 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:39:56,766 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:39:56,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:56,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:56,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:56,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:56,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:39:56,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:56,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:56,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:56,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:56,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:56,769 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:39:56,769 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:56,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:56,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:56,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:56,770 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8248f52e54312770460b05c349f71bb63d094ef2f9e53f87d753bfc5b43661 [2021-11-13 02:39:57,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:57,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:57,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:57,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:57,210 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:57,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-13 02:39:57,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/b4900735c/dfee79c96fbb4d32b1f89910153c3ec9/FLAG48634d61f [2021-11-13 02:39:58,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:39:58,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-13 02:39:58,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/b4900735c/dfee79c96fbb4d32b1f89910153c3ec9/FLAG48634d61f [2021-11-13 02:39:58,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/data/b4900735c/dfee79c96fbb4d32b1f89910153c3ec9 [2021-11-13 02:39:58,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:39:58,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:39:58,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:58,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:39:58,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:39:58,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:58" (1/1) ... [2021-11-13 02:39:58,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e60b520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:58, skipping insertion in model container [2021-11-13 02:39:58,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:58" (1/1) ... [2021-11-13 02:39:58,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:39:59,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:02,616 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2021-11-13 02:40:02,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:02,781 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:40:02,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:40:03,341 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2021-11-13 02:40:03,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:03,431 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:40:04,478 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_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i[372693,372706] [2021-11-13 02:40:04,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:40:04,834 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:40:04,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04 WrapperNode [2021-11-13 02:40:04,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:40:04,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:04,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:40:04,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:40:04,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:40:05,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:40:05,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:40:05,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:40:05,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:05,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:06,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:06,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:06,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:40:06,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:40:06,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:40:06,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:40:06,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (1/1) ... [2021-11-13 02:40:06,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:40:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:40:06,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:40:06,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:40:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_fact_prot_info [2021-11-13 02:40:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_fact_prot_info [2021-11-13 02:40:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_mmap [2021-11-13 02:40:06,425 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_mmap [2021-11-13 02:40:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:40:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-11-13 02:40:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-11-13 02:40:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_oob [2021-11-13 02:40:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_oob [2021-11-13 02:40:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_markbad [2021-11-13 02:40:06,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_markbad [2021-11-13 02:40:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2021-11-13 02:40:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2021-11-13 02:40:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:40:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_oob [2021-11-13 02:40:06,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_oob [2021-11-13 02:40:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-13 02:40:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_suspend [2021-11-13 02:40:06,428 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_suspend [2021-11-13 02:40:06,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:40:06,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 02:40:06,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:40:06,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 02:40:06,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:40:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:40:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:40:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:40:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 02:40:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 02:40:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 02:40:06,429 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 02:40:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:40:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:40:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure put_mtd_device [2021-11-13 02:40:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure put_mtd_device [2021-11-13 02:40:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_proc_open [2021-11-13 02:40:06,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_proc_open [2021-11-13 02:40:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-11-13 02:40:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-11-13 02:40:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_writeoob [2021-11-13 02:40:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_writeoob [2021-11-13 02:40:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2021-11-13 02:40:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2021-11-13 02:40:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure part_write_user_prot_reg [2021-11-13 02:40:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write_user_prot_reg [2021-11-13 02:40:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_user_prot_info [2021-11-13 02:40:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_user_prot_info [2021-11-13 02:40:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2021-11-13 02:40:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2021-11-13 02:40:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure part_read [2021-11-13 02:40:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read [2021-11-13 02:40:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write_oob [2021-11-13 02:40:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write_oob [2021-11-13 02:40:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 02:40:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 02:40:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 02:40:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 02:40:06,436 INFO L130 BoogieDeclarations]: Found specification of procedure vm_iomap_memory [2021-11-13 02:40:06,436 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_user_prot_reg [2021-11-13 02:40:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_user_prot_reg [2021-11-13 02:40:06,436 INFO L130 BoogieDeclarations]: Found specification of procedure part_panic_write [2021-11-13 02:40:06,436 INFO L138 BoogieDeclarations]: Found implementation of procedure part_panic_write [2021-11-13 02:40:06,437 INFO L130 BoogieDeclarations]: Found specification of procedure concat_unlock [2021-11-13 02:40:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_unlock [2021-11-13 02:40:06,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 02:40:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 02:40:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 02:40:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 02:40:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~C_ULONG~X~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~C_ULONG~X~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-13 02:40:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-13 02:40:06,439 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip_or_eccerr [2021-11-13 02:40:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip_or_eccerr [2021-11-13 02:40:06,439 INFO L130 BoogieDeclarations]: Found specification of procedure concat_sync [2021-11-13 02:40:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_sync [2021-11-13 02:40:06,439 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_locked [2021-11-13 02:40:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_locked [2021-11-13 02:40:06,439 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isreserved [2021-11-13 02:40:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isreserved [2021-11-13 02:40:06,440 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_ULONG~X~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_ULONG~X~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:40:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_open [2021-11-13 02:40:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_open [2021-11-13 02:40:06,441 INFO L130 BoogieDeclarations]: Found specification of procedure concat_write [2021-11-13 02:40:06,441 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_write [2021-11-13 02:40:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_kmalloc_up_to [2021-11-13 02:40:06,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_kmalloc_up_to [2021-11-13 02:40:06,442 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_readoob [2021-11-13 02:40:06,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_readoob [2021-11-13 02:40:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_bitflip [2021-11-13 02:40:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_bitflip [2021-11-13 02:40:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure part_is_locked [2021-11-13 02:40:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure part_is_locked [2021-11-13 02:40:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_write [2021-11-13 02:40:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_write [2021-11-13 02:40:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:40:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure get_mtd_device [2021-11-13 02:40:06,445 INFO L138 BoogieDeclarations]: Found implementation of procedure get_mtd_device [2021-11-13 02:40:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-13 02:40:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-13 02:40:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_markbad [2021-11-13 02:40:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_markbad [2021-11-13 02:40:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure concat_resume [2021-11-13 02:40:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_resume [2021-11-13 02:40:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_ioctl [2021-11-13 02:40:06,447 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_ioctl [2021-11-13 02:40:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure part_unlock [2021-11-13 02:40:06,447 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unlock [2021-11-13 02:40:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 02:40:06,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 02:40:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read_fact_prot_reg [2021-11-13 02:40:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read_fact_prot_reg [2021-11-13 02:40:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_sync [2021-11-13 02:40:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_sync [2021-11-13 02:40:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_div_by_ws [2021-11-13 02:40:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_div_by_ws [2021-11-13 02:40:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:40:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 02:40:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:40:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:40:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:40:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unpoint [2021-11-13 02:40:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unpoint [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:40:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure __chk_range_not_ok [2021-11-13 02:40:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __chk_range_not_ok [2021-11-13 02:40:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_eccerr [2021-11-13 02:40:06,464 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_eccerr [2021-11-13 02:40:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-13 02:40:06,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-13 02:40:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-13 02:40:06,464 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-13 02:40:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure free_partition [2021-11-13 02:40:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure free_partition [2021-11-13 02:40:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 02:40:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 02:40:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 02:40:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 02:40:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure concat_erase [2021-11-13 02:40:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_erase [2021-11-13 02:40:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase_callback [2021-11-13 02:40:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase_callback [2021-11-13 02:40:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 02:40:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 02:40:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isreserved [2021-11-13 02:40:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isreserved [2021-11-13 02:40:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2021-11-13 02:40:06,466 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2021-11-13 02:40:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_fact_prot_reg [2021-11-13 02:40:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_fact_prot_reg [2021-11-13 02:40:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 02:40:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 02:40:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-13 02:40:06,467 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-13 02:40:06,467 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_resume [2021-11-13 02:40:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_resume [2021-11-13 02:40:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_resume [2021-11-13 02:40:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_resume [2021-11-13 02:40:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_add_partition_attrs [2021-11-13 02:40:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_add_partition_attrs [2021-11-13 02:40:06,468 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 02:40:06,468 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 02:40:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure add_mtd_device [2021-11-13 02:40:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure add_mtd_device [2021-11-13 02:40:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_oob [2021-11-13 02:40:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_oob [2021-11-13 02:40:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure part_write [2021-11-13 02:40:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure part_write [2021-11-13 02:40:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~C_ULONG~TO~C_INT [2021-11-13 02:40:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~C_ULONG~TO~C_INT [2021-11-13 02:40:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure concat_lock [2021-11-13 02:40:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_lock [2021-11-13 02:40:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 02:40:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure register_mtd_user [2021-11-13 02:40:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure register_mtd_user [2021-11-13 02:40:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock_user_prot_reg [2021-11-13 02:40:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock_user_prot_reg [2021-11-13 02:40:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 02:40:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 02:40:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_is_partition [2021-11-13 02:40:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_is_partition [2021-11-13 02:40:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:40:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-13 02:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_isbad [2021-11-13 02:40:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_isbad [2021-11-13 02:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,473 INFO L130 BoogieDeclarations]: Found specification of procedure mtdchar_close [2021-11-13 02:40:06,473 INFO L138 BoogieDeclarations]: Found implementation of procedure mtdchar_close [2021-11-13 02:40:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:40:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:40:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write [2021-11-13 02:40:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write [2021-11-13 02:40:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure part_sync [2021-11-13 02:40:06,474 INFO L138 BoogieDeclarations]: Found implementation of procedure part_sync [2021-11-13 02:40:06,474 INFO L130 BoogieDeclarations]: Found specification of procedure concat_suspend [2021-11-13 02:40:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_suspend [2021-11-13 02:40:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-13 02:40:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-13 02:40:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure __get_mtd_device [2021-11-13 02:40:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_mtd_device [2021-11-13 02:40:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_oob [2021-11-13 02:40:06,475 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_oob [2021-11-13 02:40:06,475 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-13 02:40:06,476 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-13 02:40:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_of_2 [2021-11-13 02:40:06,476 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_of_2 [2021-11-13 02:40:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 02:40:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure kill_mtd_super [2021-11-13 02:40:06,476 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_mtd_super [2021-11-13 02:40:06,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 02:40:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 02:40:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 02:40:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-13 02:40:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:40:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:40:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-13 02:40:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-13 02:40:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_block_isbad [2021-11-13 02:40:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_block_isbad [2021-11-13 02:40:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 02:40:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 02:40:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-13 02:40:06,478 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-13 02:40:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:40:06,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 02:40:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 02:40:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2021-11-13 02:40:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2021-11-13 02:40:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_erase [2021-11-13 02:40:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_erase [2021-11-13 02:40:06,479 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-13 02:40:06,479 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-13 02:40:06,481 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read [2021-11-13 02:40:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read [2021-11-13 02:40:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure concat_read_oob [2021-11-13 02:40:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_read_oob [2021-11-13 02:40:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:40:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 02:40:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 02:40:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure bdi_destroy [2021-11-13 02:40:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure bdi_destroy [2021-11-13 02:40:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 02:40:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:40:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 02:40:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 02:40:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_release [2021-11-13 02:40:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_release [2021-11-13 02:40:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-13 02:40:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-13 02:40:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-13 02:40:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-13 02:40:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure __put_mtd_device [2021-11-13 02:40:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __put_mtd_device [2021-11-13 02:40:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_mod_by_eb [2021-11-13 02:40:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_mod_by_eb [2021-11-13 02:40:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~TO~C_INT [2021-11-13 02:40:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~TO~C_INT [2021-11-13 02:40:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 02:40:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 02:40:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_get_fact_prot_info [2021-11-13 02:40:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_get_fact_prot_info [2021-11-13 02:40:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 02:40:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2021-11-13 02:40:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_unlock [2021-11-13 02:40:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_unlock [2021-11-13 02:40:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure part_suspend [2021-11-13 02:40:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure part_suspend [2021-11-13 02:40:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-13 02:40:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-13 02:40:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure part_unpoint [2021-11-13 02:40:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure part_unpoint [2021-11-13 02:40:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure part_block_isbad [2021-11-13 02:40:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure part_block_isbad [2021-11-13 02:40:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_read [2021-11-13 02:40:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_read [2021-11-13 02:40:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure otp_select_filemode [2021-11-13 02:40:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure otp_select_filemode [2021-11-13 02:40:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure part_read_user_prot_reg [2021-11-13 02:40:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure part_read_user_prot_reg [2021-11-13 02:40:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure __mtd_next_device [2021-11-13 02:40:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __mtd_next_device [2021-11-13 02:40:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_lock [2021-11-13 02:40:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_lock [2021-11-13 02:40:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure del_mtd_device [2021-11-13 02:40:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure del_mtd_device [2021-11-13 02:40:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_partition [2021-11-13 02:40:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_partition [2021-11-13 02:40:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure part_erase [2021-11-13 02:40:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure part_erase [2021-11-13 02:40:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure concat_block_markbad [2021-11-13 02:40:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_block_markbad [2021-11-13 02:40:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure concat_dev_erase [2021-11-13 02:40:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure concat_dev_erase [2021-11-13 02:40:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-11-13 02:40:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-11-13 02:40:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure part_resume [2021-11-13 02:40:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure part_resume [2021-11-13 02:40:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_cls_suspend [2021-11-13 02:40:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_cls_suspend [2021-11-13 02:40:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock_user_prot_reg [2021-11-13 02:40:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock_user_prot_reg [2021-11-13 02:40:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 02:40:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 02:40:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure memdup_user [2021-11-13 02:40:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure memdup_user [2021-11-13 02:40:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure part_lock [2021-11-13 02:40:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure part_lock [2021-11-13 02:40:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-13 02:40:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-13 02:40:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_panic_write [2021-11-13 02:40:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_panic_write [2021-11-13 02:40:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 02:40:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure part_get_user_prot_info [2021-11-13 02:40:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure part_get_user_prot_info [2021-11-13 02:40:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~C_INT [2021-11-13 02:40:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~loff_t~0~X~~uint64_t~0~TO~C_INT [2021-11-13 02:40:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure mtd_write_user_prot_reg [2021-11-13 02:40:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mtd_write_user_prot_reg [2021-11-13 02:40:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:40:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:40:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 02:40:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 02:40:13,840 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:41:50,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:41:50,665 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:41:50,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:50 BoogieIcfgContainer [2021-11-13 02:41:50,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:41:50,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:41:50,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:41:50,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:41:50,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:39:58" (1/3) ... [2021-11-13 02:41:50,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f3be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:50, skipping insertion in model container [2021-11-13 02:41:50,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:40:04" (2/3) ... [2021-11-13 02:41:50,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f3be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:50, skipping insertion in model container [2021-11-13 02:41:50,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:50" (3/3) ... [2021-11-13 02:41:50,684 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--mtd--mtd.ko-entry_point.cil.out.i [2021-11-13 02:41:50,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:41:50,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:41:50,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:41:50,812 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 [2021-11-13 02:41:50,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:41:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2730 states, 1987 states have (on average 1.415702063412179) internal successors, (2813), 2038 states have internal predecessors, (2813), 594 states have call successors, (594), 148 states have call predecessors, (594), 147 states have return successors, (571), 560 states have call predecessors, (571), 571 states have call successors, (571) [2021-11-13 02:41:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2021-11-13 02:41:50,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:51,000 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:51,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -630010648, now seen corresponding path program 1 times [2021-11-13 02:41:51,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:51,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247608978] [2021-11-13 02:41:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:51,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:51,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:51,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:51,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:42:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 6485 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:42:17,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17204 backedges. 5861 proven. 0 refuted. 0 times theorem prover too weak. 11343 trivial. 0 not checked. [2021-11-13 02:42:23,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17204 backedges. 50 proven. 195 refuted. 0 times theorem prover too weak. 16959 trivial. 0 not checked. [2021-11-13 02:42:26,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:26,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247608978] [2021-11-13 02:42:26,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247608978] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:42:26,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:42:26,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 02:42:26,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67710541] [2021-11-13 02:42:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:26,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:42:26,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:42:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:42:26,185 INFO L87 Difference]: Start difference. First operand has 2730 states, 1987 states have (on average 1.415702063412179) internal successors, (2813), 2038 states have internal predecessors, (2813), 594 states have call successors, (594), 148 states have call predecessors, (594), 147 states have return successors, (571), 560 states have call predecessors, (571), 571 states have call successors, (571) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 02:42:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:26,608 INFO L93 Difference]: Finished difference Result 5446 states and 8117 transitions. [2021-11-13 02:42:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:42:26,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 869 [2021-11-13 02:42:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:26,667 INFO L225 Difference]: With dead ends: 5446 [2021-11-13 02:42:26,667 INFO L226 Difference]: Without dead ends: 2686 [2021-11-13 02:42:26,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1736 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:42:26,701 INFO L933 BasicCegarLoop]: 3958 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:26,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3958 Invalid, 0 Unknown, 0 Unchecked, 51.88ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:42:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-11-13 02:42:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2686. [2021-11-13 02:42:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 1969 states have (on average 1.4012188928390046) internal successors, (2759), 1995 states have internal predecessors, (2759), 570 states have call successors, (570), 147 states have call predecessors, (570), 146 states have return successors, (568), 557 states have call predecessors, (568), 568 states have call successors, (568) [2021-11-13 02:42:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3897 transitions. [2021-11-13 02:42:27,045 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3897 transitions. Word has length 869 [2021-11-13 02:42:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:42:27,048 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 3897 transitions. [2021-11-13 02:42:27,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-13 02:42:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3897 transitions. [2021-11-13 02:42:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2021-11-13 02:42:27,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:42:27,109 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:42:27,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:42:27,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:42:27,325 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:42:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:42:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash -604700412, now seen corresponding path program 1 times [2021-11-13 02:42:27,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:42:27,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702820708] [2021-11-13 02:42:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:42:27,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:42:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:42:27,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:42:27,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:42:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:42:53,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 6485 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:42:53,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:42:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17204 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17177 trivial. 0 not checked. [2021-11-13 02:42:55,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:42:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 17204 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17183 trivial. 0 not checked. [2021-11-13 02:42:58,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:42:58,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702820708] [2021-11-13 02:42:58,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702820708] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:42:58,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:42:58,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 02:42:58,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282931590] [2021-11-13 02:42:58,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:42:58,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:42:58,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:42:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:42:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:42:58,500 INFO L87 Difference]: Start difference. First operand 2686 states and 3897 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-13 02:42:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:42:59,864 INFO L93 Difference]: Finished difference Result 5274 states and 7661 transitions. [2021-11-13 02:42:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:42:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 869 [2021-11-13 02:42:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:42:59,903 INFO L225 Difference]: With dead ends: 5274 [2021-11-13 02:42:59,903 INFO L226 Difference]: Without dead ends: 2687 [2021-11-13 02:42:59,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1738 GetRequests, 1729 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:42:59,922 INFO L933 BasicCegarLoop]: 3882 mSDtfsCounter, 6 mSDsluCounter, 15496 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 798.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19378 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.01ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 859.28ms IncrementalHoareTripleChecker+Time [2021-11-13 02:42:59,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 19378 Invalid, 115 Unknown, 0 Unchecked, 69.01ms Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 859.28ms Time] [2021-11-13 02:42:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-11-13 02:43:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2687. [2021-11-13 02:43:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 1970 states have (on average 1.401015228426396) internal successors, (2760), 1996 states have internal predecessors, (2760), 570 states have call successors, (570), 147 states have call predecessors, (570), 146 states have return successors, (568), 557 states have call predecessors, (568), 568 states have call successors, (568) [2021-11-13 02:43:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3898 transitions. [2021-11-13 02:43:00,089 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3898 transitions. Word has length 869 [2021-11-13 02:43:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:00,098 INFO L470 AbstractCegarLoop]: Abstraction has 2687 states and 3898 transitions. [2021-11-13 02:43:00,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-13 02:43:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3898 transitions. [2021-11-13 02:43:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2021-11-13 02:43:00,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:00,113 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:00,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:00,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:00,314 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1357758864, now seen corresponding path program 1 times [2021-11-13 02:43:00,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:00,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128754223] [2021-11-13 02:43:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:00,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:00,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:00,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:00,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:43:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 6505 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:43:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 17189 trivial. 0 not checked. [2021-11-13 02:43:28,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 17195 trivial. 0 not checked. [2021-11-13 02:43:31,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:43:31,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128754223] [2021-11-13 02:43:31,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128754223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:43:31,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [622658775] [2021-11-13 02:43:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:31,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:43:31,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:43:31,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:43:31,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-13 02:43:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:43:36,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 6505 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:43:36,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:43:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2021-11-13 02:43:45,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:43:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2021-11-13 02:43:48,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [622658775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:43:48,973 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:43:48,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:43:48,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324898512] [2021-11-13 02:43:48,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:43:48,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:43:48,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:43:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:43:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:43:48,978 INFO L87 Difference]: Start difference. First operand 2687 states and 3898 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (115), 3 states have call predecessors, (115), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:43:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:43:49,339 INFO L93 Difference]: Finished difference Result 7837 states and 11499 transitions. [2021-11-13 02:43:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:43:49,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (115), 3 states have call predecessors, (115), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 873 [2021-11-13 02:43:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:43:49,409 INFO L225 Difference]: With dead ends: 7837 [2021-11-13 02:43:49,409 INFO L226 Difference]: Without dead ends: 5252 [2021-11-13 02:43:49,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3488 GetRequests, 3478 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:43:49,437 INFO L933 BasicCegarLoop]: 6680 mSDtfsCounter, 3685 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 10474 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:43:49,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 10474 Invalid, 10 Unknown, 0 Unchecked, 44.55ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 57.24ms Time] [2021-11-13 02:43:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-11-13 02:43:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 5249. [2021-11-13 02:43:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 3875 states have (on average 1.4067096774193548) internal successors, (5451), 3925 states have internal predecessors, (5451), 1081 states have call successors, (1081), 293 states have call predecessors, (1081), 292 states have return successors, (1147), 1057 states have call predecessors, (1147), 1079 states have call successors, (1147) [2021-11-13 02:43:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 7679 transitions. [2021-11-13 02:43:49,755 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 7679 transitions. Word has length 873 [2021-11-13 02:43:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:43:49,759 INFO L470 AbstractCegarLoop]: Abstraction has 5249 states and 7679 transitions. [2021-11-13 02:43:49,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (115), 3 states have call predecessors, (115), 2 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-13 02:43:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 7679 transitions. [2021-11-13 02:43:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2021-11-13 02:43:49,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:43:49,778 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:43:49,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:43:50,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-13 02:43:50,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:43:50,204 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:43:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:43:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1113822769, now seen corresponding path program 1 times [2021-11-13 02:43:50,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:43:50,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757966509] [2021-11-13 02:43:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:43:50,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:43:50,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:43:50,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:43:50,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:44:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 6576 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:44:15,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 17189 trivial. 0 not checked. [2021-11-13 02:44:16,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 17195 trivial. 0 not checked. [2021-11-13 02:44:19,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:19,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757966509] [2021-11-13 02:44:19,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757966509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:19,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466921824] [2021-11-13 02:44:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:19,639 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:19,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:19,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-13 02:44:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:23,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 6576 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2021-11-13 02:44:25,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17226 trivial. 0 not checked. [2021-11-13 02:44:26,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466921824] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:26,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:26,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:44:26,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375350525] [2021-11-13 02:44:26,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:27,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:44:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:44:27,003 INFO L87 Difference]: Start difference. First operand 5249 states and 7679 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-13 02:44:28,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:28,607 INFO L93 Difference]: Finished difference Result 15345 states and 22389 transitions. [2021-11-13 02:44:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:28,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 889 [2021-11-13 02:44:28,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:28,716 INFO L225 Difference]: With dead ends: 15345 [2021-11-13 02:44:28,716 INFO L226 Difference]: Without dead ends: 10207 [2021-11-13 02:44:28,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3552 GetRequests, 3542 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:44:28,756 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 3734 mSDsluCounter, 3669 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1070.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 8488 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1211.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:28,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3734 Valid, 8488 Invalid, 65 Unknown, 0 Unchecked, 30.54ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 1211.31ms Time] [2021-11-13 02:44:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10207 states. [2021-11-13 02:44:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10207 to 10195. [2021-11-13 02:44:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10195 states, 7518 states have (on average 1.4032987496674647) internal successors, (10550), 7620 states have internal predecessors, (10550), 2092 states have call successors, (2092), 585 states have call predecessors, (2092), 584 states have return successors, (2220), 2043 states have call predecessors, (2220), 2090 states have call successors, (2220) [2021-11-13 02:44:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10195 states to 10195 states and 14862 transitions. [2021-11-13 02:44:29,392 INFO L78 Accepts]: Start accepts. Automaton has 10195 states and 14862 transitions. Word has length 889 [2021-11-13 02:44:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:29,394 INFO L470 AbstractCegarLoop]: Abstraction has 10195 states and 14862 transitions. [2021-11-13 02:44:29,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-13 02:44:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10195 states and 14862 transitions. [2021-11-13 02:44:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2021-11-13 02:44:29,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:29,412 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:29,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:29,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:29,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:29,826 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1731246546, now seen corresponding path program 1 times [2021-11-13 02:44:29,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:44:29,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501054973] [2021-11-13 02:44:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:29,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:44:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:44:29,845 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:44:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:44:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:53,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 6952 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:44:53,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17486 trivial. 0 not checked. [2021-11-13 02:44:55,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22392 trivial. 0 not checked. [2021-11-13 02:44:58,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:44:58,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501054973] [2021-11-13 02:44:58,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501054973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:44:58,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93733906] [2021-11-13 02:44:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:58,495 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:44:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:44:58,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:44:58,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-13 02:45:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:02,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 6952 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:45:02,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 4903 proven. 0 refuted. 0 times theorem prover too weak. 17520 trivial. 0 not checked. [2021-11-13 02:45:04,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22420 trivial. 0 not checked. [2021-11-13 02:45:07,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93733906] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:45:07,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:07,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7, 7] total 14 [2021-11-13 02:45:07,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804007506] [2021-11-13 02:45:07,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:07,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:45:07,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:45:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:45:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:45:07,097 INFO L87 Difference]: Start difference. First operand 10195 states and 14862 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-13 02:45:09,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:11,332 INFO L93 Difference]: Finished difference Result 30308 states and 44171 transitions. [2021-11-13 02:45:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:45:11,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 1024 [2021-11-13 02:45:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:11,505 INFO L225 Difference]: With dead ends: 30308 [2021-11-13 02:45:11,505 INFO L226 Difference]: Without dead ends: 20178 [2021-11-13 02:45:11,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4095 GetRequests, 4080 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:45:11,573 INFO L933 BasicCegarLoop]: 5350 mSDtfsCounter, 3714 mSDsluCounter, 14568 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3020.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3716 SdHoareTripleChecker+Valid, 19918 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.63ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3178.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:11,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3716 Valid, 19918 Invalid, 45 Unknown, 0 Unchecked, 58.63ms Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 3178.51ms Time] [2021-11-13 02:45:11,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20178 states. [2021-11-13 02:45:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20178 to 20142. [2021-11-13 02:45:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 14887 states have (on average 1.405723114126419) internal successors, (20927), 15083 states have internal predecessors, (20927), 4094 states have call successors, (4094), 1161 states have call predecessors, (4094), 1160 states have return successors, (4352), 3994 states have call predecessors, (4352), 4092 states have call successors, (4352) [2021-11-13 02:45:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 29373 transitions. [2021-11-13 02:45:12,698 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 29373 transitions. Word has length 1024 [2021-11-13 02:45:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:12,700 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 29373 transitions. [2021-11-13 02:45:12,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-13 02:45:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 29373 transitions. [2021-11-13 02:45:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2021-11-13 02:45:12,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:12,719 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 12, 12, 12, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:12,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:13,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:13,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:45:13,148 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:13,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1758395315, now seen corresponding path program 1 times [2021-11-13 02:45:13,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:45:13,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617496538] [2021-11-13 02:45:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:13,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:45:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:45:13,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:45:13,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:45:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:36,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 7209 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:45:36,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 21597 backedges. 3632 proven. 1 refuted. 0 times theorem prover too weak. 17964 trivial. 0 not checked. [2021-11-13 02:45:39,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21597 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 21486 trivial. 0 not checked. [2021-11-13 02:45:42,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:45:42,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617496538] [2021-11-13 02:45:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617496538] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:45:42,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2043960944] [2021-11-13 02:45:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:42,687 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:42,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:45:42,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:45:42,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 02:45:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 7209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:45:47,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21597 backedges. 3884 proven. 0 refuted. 0 times theorem prover too weak. 17713 trivial. 0 not checked. [2021-11-13 02:45:50,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21597 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21597 trivial. 0 not checked. [2021-11-13 02:45:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2043960944] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:45:52,176 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:52,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 12 [2021-11-13 02:45:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821343901] [2021-11-13 02:45:52,177 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:52,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:45:52,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:45:52,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:45:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:45:52,179 INFO L87 Difference]: Start difference. First operand 20142 states and 29373 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-13 02:45:55,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:45:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:56,320 INFO L93 Difference]: Finished difference Result 44448 states and 64759 transitions. [2021-11-13 02:45:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:45:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 1074 [2021-11-13 02:45:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:56,476 INFO L225 Difference]: With dead ends: 44448 [2021-11-13 02:45:56,476 INFO L226 Difference]: Without dead ends: 24417 [2021-11-13 02:45:56,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4292 GetRequests, 4282 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:45:56,560 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 1274 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3004.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 8306 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3161.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:56,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 8306 Invalid, 35 Unknown, 0 Unchecked, 18.26ms Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 3161.02ms Time] [2021-11-13 02:45:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24417 states. [2021-11-13 02:45:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24417 to 24398. [2021-11-13 02:45:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24398 states, 18212 states have (on average 1.408247309466286) internal successors, (25647), 18486 states have internal predecessors, (25647), 4767 states have call successors, (4767), 1419 states have call predecessors, (4767), 1418 states have return successors, (5111), 4617 states have call predecessors, (5111), 4765 states have call successors, (5111) [2021-11-13 02:45:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24398 states to 24398 states and 35525 transitions. [2021-11-13 02:45:57,961 INFO L78 Accepts]: Start accepts. Automaton has 24398 states and 35525 transitions. Word has length 1074 [2021-11-13 02:45:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:57,963 INFO L470 AbstractCegarLoop]: Abstraction has 24398 states and 35525 transitions. [2021-11-13 02:45:57,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2021-11-13 02:45:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24398 states and 35525 transitions. [2021-11-13 02:45:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2021-11-13 02:45:57,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:57,985 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:58,186 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forcibly destroying the process [2021-11-13 02:45:58,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:58,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:58,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:45:58,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1713088677, now seen corresponding path program 1 times [2021-11-13 02:45:58,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:45:58,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169956065] [2021-11-13 02:45:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:58,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:45:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:45:58,407 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:45:58,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:46:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:22,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 7045 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:46:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17486 trivial. 0 not checked. [2021-11-13 02:46:25,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22392 trivial. 0 not checked. [2021-11-13 02:46:28,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:46:28,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169956065] [2021-11-13 02:46:28,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169956065] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:46:28,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [936988252] [2021-11-13 02:46:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:28,543 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:46:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:46:28,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:46:28,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 02:46:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:46:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 7045 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:46:32,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:46:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 787 proven. 0 refuted. 0 times theorem prover too weak. 21636 trivial. 0 not checked. [2021-11-13 02:46:34,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:46:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 22423 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22420 trivial. 0 not checked. [2021-11-13 02:46:36,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [936988252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:46:36,854 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:46:36,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7, 7] total 13 [2021-11-13 02:46:36,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744072953] [2021-11-13 02:46:36,855 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:46:36,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:46:36,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:46:36,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:46:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:46:36,858 INFO L87 Difference]: Start difference. First operand 24398 states and 35525 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 4 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2021-11-13 02:46:39,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:46:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:46:51,011 INFO L93 Difference]: Finished difference Result 72193 states and 105273 transitions. [2021-11-13 02:46:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:46:51,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 4 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 1042 [2021-11-13 02:46:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:46:51,296 INFO L225 Difference]: With dead ends: 72193 [2021-11-13 02:46:51,296 INFO L226 Difference]: Without dead ends: 47916 [2021-11-13 02:46:51,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4164 GetRequests, 4153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:46:51,545 INFO L933 BasicCegarLoop]: 6526 mSDtfsCounter, 8983 mSDsluCounter, 6311 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 868 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11717.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8983 SdHoareTripleChecker+Valid, 12837 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.20ms SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12898.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:46:51,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8983 Valid, 12837 Invalid, 2136 Unknown, 0 Unchecked, 43.20ms Time], IncrementalHoareTripleChecker [868 Valid, 1267 Invalid, 1 Unknown, 0 Unchecked, 12898.17ms Time] [2021-11-13 02:46:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47916 states. [2021-11-13 02:46:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47916 to 47886. [2021-11-13 02:46:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47886 states, 35856 states have (on average 1.4100011155734047) internal successors, (50557), 36402 states have internal predecessors, (50557), 9255 states have call successors, (9255), 2775 states have call predecessors, (9255), 2774 states have return successors, (9891), 8953 states have call predecessors, (9891), 9253 states have call successors, (9891) [2021-11-13 02:46:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47886 states to 47886 states and 69703 transitions. [2021-11-13 02:46:53,993 INFO L78 Accepts]: Start accepts. Automaton has 47886 states and 69703 transitions. Word has length 1042 [2021-11-13 02:46:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:46:53,996 INFO L470 AbstractCegarLoop]: Abstraction has 47886 states and 69703 transitions. [2021-11-13 02:46:53,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 4 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2021-11-13 02:46:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 47886 states and 69703 transitions. [2021-11-13 02:46:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2021-11-13 02:46:54,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:46:54,296 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:46:54,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:54,704 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forcibly destroying the process [2021-11-13 02:46:54,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:46:54,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:46:54,718 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:46:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:46:54,719 INFO L85 PathProgramCache]: Analyzing trace with hash 285239020, now seen corresponding path program 1 times [2021-11-13 02:46:54,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:46:54,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446185272] [2021-11-13 02:46:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:46:54,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:46:54,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:46:54,744 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:46:54,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:47:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:20,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 7079 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:47:20,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17496 trivial. 0 not checked. [2021-11-13 02:47:23,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:47:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22402 trivial. 0 not checked. [2021-11-13 02:47:27,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:47:27,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446185272] [2021-11-13 02:47:27,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446185272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:47:27,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657644143] [2021-11-13 02:47:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:47:27,537 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:47:27,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:47:27,538 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:47:27,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 02:47:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:47:54,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 7079 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:47:54,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:47:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17496 trivial. 0 not checked. [2021-11-13 02:47:57,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22402 trivial. 0 not checked. [2021-11-13 02:48:00,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1657644143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:00,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643064446] [2021-11-13 02:48:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:00,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:48:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:48:00,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:48:00,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 02:48:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:05,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 7079 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:48:05,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 4906 proven. 0 refuted. 0 times theorem prover too weak. 17527 trivial. 0 not checked. [2021-11-13 02:48:07,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22433 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22427 trivial. 0 not checked. [2021-11-13 02:48:09,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643064446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:48:09,698 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-13 02:48:09,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7, 7] total 15 [2021-11-13 02:48:09,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294962999] [2021-11-13 02:48:09,699 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:48:09,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:48:09,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:48:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:48:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:48:09,701 INFO L87 Difference]: Start difference. First operand 47886 states and 69703 transitions. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-13 02:48:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:48:11,111 INFO L93 Difference]: Finished difference Result 95756 states and 139400 transitions. [2021-11-13 02:48:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:48:11,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) Word has length 1060 [2021-11-13 02:48:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:48:11,425 INFO L225 Difference]: With dead ends: 95756 [2021-11-13 02:48:11,425 INFO L226 Difference]: Without dead ends: 47975 [2021-11-13 02:48:11,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6355 GetRequests, 6341 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:48:11,605 INFO L933 BasicCegarLoop]: 3903 mSDtfsCounter, 27 mSDsluCounter, 11680 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15583 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.90ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:48:11,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 15583 Invalid, 34 Unknown, 0 Unchecked, 14.90ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 155.95ms Time] [2021-11-13 02:48:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47975 states. [2021-11-13 02:48:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47975 to 47918. [2021-11-13 02:48:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47918 states, 35888 states have (on average 1.4094126170307624) internal successors, (50581), 36434 states have internal predecessors, (50581), 9255 states have call successors, (9255), 2775 states have call predecessors, (9255), 2774 states have return successors, (9891), 8953 states have call predecessors, (9891), 9253 states have call successors, (9891) [2021-11-13 02:48:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47918 states to 47918 states and 69727 transitions. [2021-11-13 02:48:13,850 INFO L78 Accepts]: Start accepts. Automaton has 47918 states and 69727 transitions. Word has length 1060 [2021-11-13 02:48:13,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:48:13,852 INFO L470 AbstractCegarLoop]: Abstraction has 47918 states and 69727 transitions. [2021-11-13 02:48:13,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 2 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (78), 2 states have call predecessors, (78), 2 states have call successors, (78) [2021-11-13 02:48:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 47918 states and 69727 transitions. [2021-11-13 02:48:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2021-11-13 02:48:13,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:48:13,878 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:48:14,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:14,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:14,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:48:14,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:48:14,500 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:48:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:48:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash -478638241, now seen corresponding path program 1 times [2021-11-13 02:48:14,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:48:14,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298759519] [2021-11-13 02:48:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:14,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:48:14,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:48:14,511 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:48:14,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:48:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:48:38,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 7083 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:48:38,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:48:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17498 trivial. 0 not checked. [2021-11-13 02:48:41,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:48:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22404 trivial. 0 not checked. [2021-11-13 02:48:44,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:48:44,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298759519] [2021-11-13 02:48:44,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298759519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:48:44,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946726234] [2021-11-13 02:48:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:48:44,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:48:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:48:44,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:48:44,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-13 02:49:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:49:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 7083 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:49:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:49:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 4936 proven. 1 refuted. 0 times theorem prover too weak. 17498 trivial. 0 not checked. [2021-11-13 02:49:14,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 22404 trivial. 0 not checked. [2021-11-13 02:49:16,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1946726234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:49:16,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984196537] [2021-11-13 02:49:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:49:16,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:49:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:49:16,893 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:49:16,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 02:49:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:49:24,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 7083 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:49:24,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:49:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 4958 proven. 1 refuted. 0 times theorem prover too weak. 17476 trivial. 0 not checked. [2021-11-13 02:49:26,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:49:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22435 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 22404 trivial. 0 not checked. [2021-11-13 02:49:29,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984196537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:49:29,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:49:29,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 13 [2021-11-13 02:49:29,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963303001] [2021-11-13 02:49:29,986 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:49:29,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:49:29,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:49:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:49:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:49:29,990 INFO L87 Difference]: Start difference. First operand 47918 states and 69727 transitions. Second operand has 13 states, 10 states have (on average 19.8) internal successors, (198), 13 states have internal predecessors, (198), 5 states have call successors, (92), 2 states have call predecessors, (92), 6 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) [2021-11-13 02:49:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:49:32,540 INFO L93 Difference]: Finished difference Result 95919 states and 139699 transitions. [2021-11-13 02:49:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:49:32,541 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 19.8) internal successors, (198), 13 states have internal predecessors, (198), 5 states have call successors, (92), 2 states have call predecessors, (92), 6 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) Word has length 1062 [2021-11-13 02:49:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:49:32,894 INFO L225 Difference]: With dead ends: 95919 [2021-11-13 02:49:32,894 INFO L226 Difference]: Without dead ends: 48020 [2021-11-13 02:49:33,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6370 GetRequests, 6355 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:49:33,055 INFO L933 BasicCegarLoop]: 3882 mSDtfsCounter, 25 mSDsluCounter, 19368 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 832.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23250 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.73ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 899.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:49:33,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 23250 Invalid, 195 Unknown, 0 Unchecked, 24.73ms Time], IncrementalHoareTripleChecker [52 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 899.66ms Time] [2021-11-13 02:49:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48020 states. [2021-11-13 02:49:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48020 to 48020. [2021-11-13 02:49:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48020 states, 35956 states have (on average 1.4086383357436867) internal successors, (50649), 36502 states have internal predecessors, (50649), 9272 states have call successors, (9272), 2792 states have call predecessors, (9272), 2791 states have return successors, (9908), 8970 states have call predecessors, (9908), 9270 states have call successors, (9908) [2021-11-13 02:49:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48020 states to 48020 states and 69829 transitions. [2021-11-13 02:49:34,913 INFO L78 Accepts]: Start accepts. Automaton has 48020 states and 69829 transitions. Word has length 1062 [2021-11-13 02:49:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:49:34,915 INFO L470 AbstractCegarLoop]: Abstraction has 48020 states and 69829 transitions. [2021-11-13 02:49:34,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 19.8) internal successors, (198), 13 states have internal predecessors, (198), 5 states have call successors, (92), 2 states have call predecessors, (92), 6 states have return successors, (90), 5 states have call predecessors, (90), 5 states have call successors, (90) [2021-11-13 02:49:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 48020 states and 69829 transitions. [2021-11-13 02:49:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2021-11-13 02:49:34,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:49:34,941 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:49:35,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-13 02:49:35,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-13 02:49:35,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:49:35,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:49:35,568 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:49:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:49:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -301540774, now seen corresponding path program 1 times [2021-11-13 02:49:35,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:49:35,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566265707] [2021-11-13 02:49:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:49:35,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:49:35,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:49:35,580 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:49:35,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 02:49:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:49:59,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 7099 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:50:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 4951 proven. 3 refuted. 0 times theorem prover too weak. 17517 trivial. 0 not checked. [2021-11-13 02:50:02,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 22423 trivial. 0 not checked. [2021-11-13 02:50:06,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:50:06,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566265707] [2021-11-13 02:50:06,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566265707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:50:06,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1230399760] [2021-11-13 02:50:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:50:06,374 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:50:06,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:50:06,375 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:50:06,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-13 02:50:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:50:33,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 7099 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:50:33,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 4951 proven. 3 refuted. 0 times theorem prover too weak. 17517 trivial. 0 not checked. [2021-11-13 02:50:36,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 22423 trivial. 0 not checked. [2021-11-13 02:50:39,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1230399760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:50:39,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206027458] [2021-11-13 02:50:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:50:39,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:50:39,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:50:39,276 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:50:39,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 02:50:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:50:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 7099 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:50:46,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:50:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 4951 proven. 3 refuted. 0 times theorem prover too weak. 17517 trivial. 0 not checked. [2021-11-13 02:50:49,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:50:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 22471 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 22423 trivial. 0 not checked. [2021-11-13 02:50:53,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206027458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:50:53,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:50:53,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-13 02:50:53,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210603205] [2021-11-13 02:50:53,346 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:50:53,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 02:50:53,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:50:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 02:50:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:50:53,350 INFO L87 Difference]: Start difference. First operand 48020 states and 69829 transitions. Second operand has 20 states, 17 states have (on average 12.117647058823529) internal successors, (206), 20 states have internal predecessors, (206), 5 states have call successors, (91), 2 states have call predecessors, (91), 7 states have return successors, (89), 5 states have call predecessors, (89), 5 states have call successors, (89) [2021-11-13 02:50:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:50:57,542 INFO L93 Difference]: Finished difference Result 96084 states and 139847 transitions. [2021-11-13 02:50:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:50:57,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 12.117647058823529) internal successors, (206), 20 states have internal predecessors, (206), 5 states have call successors, (91), 2 states have call predecessors, (91), 7 states have return successors, (89), 5 states have call predecessors, (89), 5 states have call successors, (89) Word has length 1064 [2021-11-13 02:50:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:50:57,757 INFO L225 Difference]: With dead ends: 96084 [2021-11-13 02:50:57,757 INFO L226 Difference]: Without dead ends: 48037 [2021-11-13 02:50:57,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6381 GetRequests, 6360 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-11-13 02:50:57,865 INFO L933 BasicCegarLoop]: 3881 mSDtfsCounter, 20 mSDsluCounter, 46506 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2228.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 50387 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.97ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2412.26ms IncrementalHoareTripleChecker+Time [2021-11-13 02:50:57,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 50387 Invalid, 363 Unknown, 0 Unchecked, 41.97ms Time], IncrementalHoareTripleChecker [37 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 2412.26ms Time] [2021-11-13 02:50:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48037 states. [2021-11-13 02:50:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48037 to 48037. [2021-11-13 02:50:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48037 states, 35973 states have (on average 1.4084452228059934) internal successors, (50666), 36519 states have internal predecessors, (50666), 9272 states have call successors, (9272), 2792 states have call predecessors, (9272), 2791 states have return successors, (9908), 8970 states have call predecessors, (9908), 9270 states have call successors, (9908) [2021-11-13 02:50:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48037 states to 48037 states and 69846 transitions. [2021-11-13 02:50:59,918 INFO L78 Accepts]: Start accepts. Automaton has 48037 states and 69846 transitions. Word has length 1064 [2021-11-13 02:50:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:50:59,919 INFO L470 AbstractCegarLoop]: Abstraction has 48037 states and 69846 transitions. [2021-11-13 02:50:59,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 12.117647058823529) internal successors, (206), 20 states have internal predecessors, (206), 5 states have call successors, (91), 2 states have call predecessors, (91), 7 states have return successors, (89), 5 states have call predecessors, (89), 5 states have call successors, (89) [2021-11-13 02:50:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 48037 states and 69846 transitions. [2021-11-13 02:50:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2021-11-13 02:50:59,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:50:59,944 INFO L514 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:51:00,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:51:00,373 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forcibly destroying the process [2021-11-13 02:51:00,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 137 [2021-11-13 02:51:00,641 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forcibly destroying the process [2021-11-13 02:51:00,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:51:00,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:51:00,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:51:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:51:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1133506926, now seen corresponding path program 2 times [2021-11-13 02:51:00,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:51:00,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833119355] [2021-11-13 02:51:00,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:51:00,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:51:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:51:00,678 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:51:00,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d577dc9b-acb5-43ed-aee2-419cdeb1aa53/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process