./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8 --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 32bit --witnessprinter.graph.data.programhash dac6403f37599f80fd46825f02fd0972bc86095b .......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8 --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 32bit --witnessprinter.graph.data.programhash dac6403f37599f80fd46825f02fd0972bc86095b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:54:21,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:54:21,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:54:21,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:54:21,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:54:21,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:54:21,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:54:21,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:54:21,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:54:21,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:54:21,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:54:21,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:54:21,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:54:21,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:54:21,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:54:21,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:54:21,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:54:21,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:54:21,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:54:21,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:54:21,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:54:21,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:54:21,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:54:21,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:54:21,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:54:21,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:54:21,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:54:21,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:54:21,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:54:21,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:54:21,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:54:21,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:54:21,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:54:21,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:54:21,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:54:21,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:54:21,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:54:21,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:54:21,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:54:21,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:54:21,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:54:21,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:54:21,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:54:21,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:54:21,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:54:21,852 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:54:21,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:54:21,853 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:54:21,853 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:54:21,853 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:54:21,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:54:21,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:54:21,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:54:21,855 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:54:21,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:54:21,855 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:54:21,855 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:54:21,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:54:21,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:54:21,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:54:21,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:54:21,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:54:21,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:54:21,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:54:21,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:54:21,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:54:21,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:54:21,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:54:21,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:54:21,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:54:21,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:54:21,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:54:21,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:21,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:54:21,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:54:21,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:54:21,862 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:54:21,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:54:21,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:54:21,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:54:21,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:54:21,863 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2021-10-13 07:54:22,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:54:22,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:54:22,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:54:22,160 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:54:22,161 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:54:22,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-13 07:54:22,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/8ddb51766/a7d7dbe50cc7485eb24cf4dba0da205d/FLAGe284b4cf8 [2021-10-13 07:54:22,799 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:54:22,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-13 07:54:22,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/8ddb51766/a7d7dbe50cc7485eb24cf4dba0da205d/FLAGe284b4cf8 [2021-10-13 07:54:23,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/8ddb51766/a7d7dbe50cc7485eb24cf4dba0da205d [2021-10-13 07:54:23,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:54:23,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:54:23,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:23,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:54:23,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:54:23,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2967b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23, skipping insertion in model container [2021-10-13 07:54:23,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:54:23,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:54:23,388 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-13 07:54:23,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:23,400 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:54:23,426 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-13 07:54:23,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:23,438 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:54:23,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23 WrapperNode [2021-10-13 07:54:23,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:23,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:23,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:54:23,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:54:23,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:23,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:54:23,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:54:23,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:54:23,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:54:23,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:54:23,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:54:23,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:54:23,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (1/1) ... [2021-10-13 07:54:23,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:23,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:54:23,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:54:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:54:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:54:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:54:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:54:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:54:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:54:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:54:23,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:54:23,926 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:54:23,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:23 BoogieIcfgContainer [2021-10-13 07:54:23,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:54:23,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:54:23,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:54:23,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:54:23,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:23" (1/3) ... [2021-10-13 07:54:23,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14277f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:23, skipping insertion in model container [2021-10-13 07:54:23,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:23" (2/3) ... [2021-10-13 07:54:23,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14277f4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:23, skipping insertion in model container [2021-10-13 07:54:23,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:23" (3/3) ... [2021-10-13 07:54:23,944 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-10-13 07:54:23,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:54:23,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:54:24,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:54:24,051 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, mConcurrency=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 [2021-10-13 07:54:24,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:54:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:54:24,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:24,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:54:24,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:24,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1980571804, now seen corresponding path program 1 times [2021-10-13 07:54:24,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:24,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923338803] [2021-10-13 07:54:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:24,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:24,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:24,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923338803] [2021-10-13 07:54:24,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923338803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:24,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:24,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:54:24,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72408496] [2021-10-13 07:54:24,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:54:24,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:54:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:54:24,331 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:24,346 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2021-10-13 07:54:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:54:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:54:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:24,357 INFO L225 Difference]: With dead ends: 18 [2021-10-13 07:54:24,357 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 07:54:24,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:54:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 07:54:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 07:54:24,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 07:54:24,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-13 07:54:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:24,393 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 07:54:24,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 07:54:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:54:24,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:24,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:24,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:54:24,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:24,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1261016426, now seen corresponding path program 1 times [2021-10-13 07:54:24,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:24,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588365152] [2021-10-13 07:54:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:24,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:24,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:24,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588365152] [2021-10-13 07:54:24,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588365152] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:24,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:24,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:54:24,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989751070] [2021-10-13 07:54:24,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:54:24,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:54:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:54:24,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:54:24,645 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:24,704 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:54:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:54:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:54:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:24,705 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:54:24,705 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 07:54:24,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:54:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 07:54:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 07:54:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:54:24,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-13 07:54:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:24,714 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:54:24,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:54:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:54:24,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:24,715 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:24,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:54:24,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:24,731 INFO L82 PathProgramCache]: Analyzing trace with hash 688009029, now seen corresponding path program 1 times [2021-10-13 07:54:24,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:54:24,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660911689] [2021-10-13 07:54:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:24,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:54:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:24,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:54:24,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660911689] [2021-10-13 07:54:24,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660911689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:54:24,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957131658] [2021-10-13 07:54:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:24,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:24,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:24,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:54:24,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:54:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:25,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:54:25,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:25,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-13 07:54:31,433 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-13 07:54:31,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 17 [2021-10-13 07:54:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:31,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957131658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:31,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743612072] [2021-10-13 07:54:31,561 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-13 07:54:31,562 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:54:31,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:54:31,574 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:54:31,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:54:31,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,613 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:54:31,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-13 07:54:31,616 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:54:31,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:54:31,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-10-13 07:54:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:54:31,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-13 07:54:31,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-13 07:54:31,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-13 07:54:31,658 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:54:31,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:31,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:54:31,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-13 07:54:31,685 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:54:31,685 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:157, output treesize:162 [2021-10-13 07:54:31,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:31,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:31,911 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:54:31,914 INFO L168 Benchmark]: Toolchain (without parser) took 8759.61 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 66.9 MB in the end (delta: -7.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:31,915 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.3 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:31,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.00 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 77.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:31,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 75.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:31,917 INFO L168 Benchmark]: Boogie Preprocessor took 38.16 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 74.5 MB in the end (delta: 922.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:31,919 INFO L168 Benchmark]: RCFGBuilder took 417.30 ms. Allocated memory is still 102.8 MB. Free memory was 74.2 MB in the beginning and 61.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:31,920 INFO L168 Benchmark]: TraceAbstraction took 7983.38 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 66.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:31,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 75.3 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.00 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 77.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.10 ms. Allocated memory is still 102.8 MB. Free memory was 76.9 MB in the beginning and 75.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.16 ms. Allocated memory is still 102.8 MB. Free memory was 75.4 MB in the beginning and 74.5 MB in the end (delta: 922.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 417.30 ms. Allocated memory is still 102.8 MB. Free memory was 74.2 MB in the beginning and 61.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7983.38 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 61.0 MB in the beginning and 66.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:54:31,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:54:34,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:54:34,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:54:34,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:54:34,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:54:34,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:54:34,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:54:34,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:54:34,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:54:34,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:54:34,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:54:34,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:54:34,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:54:34,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:54:34,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:54:34,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:54:34,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:54:34,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:54:34,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:54:34,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:54:34,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:54:34,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:54:34,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:54:34,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:54:34,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:54:34,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:54:34,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:54:34,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:54:34,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:54:34,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:54:34,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:54:34,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:54:34,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:54:34,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:54:34,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:54:34,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:54:34,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:54:34,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:54:34,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:54:34,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:54:34,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:54:34,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:54:34,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:54:34,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:54:34,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:54:34,555 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:54:34,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:54:34,555 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:54:34,555 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:54:34,556 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:54:34,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:54:34,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:54:34,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:54:34,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:54:34,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:54:34,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:54:34,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:54:34,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:54:34,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:54:34,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:54:34,560 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:54:34,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:54:34,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:54:34,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:54:34,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:54:34,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:54:34,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:54:34,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:54:34,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:34,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:54:34,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:54:34,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:54:34,563 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:54:34,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:54:34,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:54:34,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:54:34,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:54:34,564 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac6403f37599f80fd46825f02fd0972bc86095b [2021-10-13 07:54:34,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:54:35,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:54:35,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:54:35,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:54:35,022 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:54:35,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-13 07:54:35,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/633cab760/1be80d06371241dd8862532f1aa49537/FLAG00740ff76 [2021-10-13 07:54:35,655 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:54:35,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c [2021-10-13 07:54:35,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/633cab760/1be80d06371241dd8862532f1aa49537/FLAG00740ff76 [2021-10-13 07:54:35,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/data/633cab760/1be80d06371241dd8862532f1aa49537 [2021-10-13 07:54:35,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:54:35,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:54:36,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:36,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:54:36,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:54:36,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:35" (1/1) ... [2021-10-13 07:54:36,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f5ec46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36, skipping insertion in model container [2021-10-13 07:54:36,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:54:35" (1/1) ... [2021-10-13 07:54:36,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:54:36,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:54:36,245 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-13 07:54:36,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:36,273 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:54:36,304 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_4ee778b4-59ca-4d63-aecd-d8b99c434601/sv-benchmarks/c/ldv-regression/test24-1.c[704,717] [2021-10-13 07:54:36,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:54:36,339 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:54:36,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36 WrapperNode [2021-10-13 07:54:36,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:54:36,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:36,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:54:36,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:54:36,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:54:36,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:54:36,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:54:36,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:54:36,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:54:36,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:54:36,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:54:36,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:54:36,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (1/1) ... [2021-10-13 07:54:36,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:54:36,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:36,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:54:36,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:54:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:54:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:54:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:54:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:54:36,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:54:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:54:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:54:36,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:54:36,842 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:54:36,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:36 BoogieIcfgContainer [2021-10-13 07:54:36,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:54:36,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:54:36,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:54:36,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:54:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:54:35" (1/3) ... [2021-10-13 07:54:36,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee46829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:36, skipping insertion in model container [2021-10-13 07:54:36,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:54:36" (2/3) ... [2021-10-13 07:54:36,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee46829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:54:36, skipping insertion in model container [2021-10-13 07:54:36,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:36" (3/3) ... [2021-10-13 07:54:36,867 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-10-13 07:54:36,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:54:36,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:54:36,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:54:36,938 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, mConcurrency=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 [2021-10-13 07:54:36,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:54:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:54:36,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:36,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:36,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:36,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2021-10-13 07:54:36,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:36,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999439343] [2021-10-13 07:54:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:36,974 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:36,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:36,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:37,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:54:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:37,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:54:37,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:37,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:37,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:37,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999439343] [2021-10-13 07:54:37,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999439343] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:37,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:37,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:54:37,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433115222] [2021-10-13 07:54:37,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:54:37,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:54:37,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:54:37,293 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:37,308 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-13 07:54:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:54:37,310 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:54:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:37,316 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:54:37,316 INFO L226 Difference]: Without dead ends: 10 [2021-10-13 07:54:37,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:54:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-13 07:54:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 07:54:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-13 07:54:37,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2021-10-13 07:54:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:37,342 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-13 07:54:37,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-13 07:54:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:54:37,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:37,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:37,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:37,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:37,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:37,557 INFO L82 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2021-10-13 07:54:37,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:37,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713317742] [2021-10-13 07:54:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:37,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:37,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:37,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:37,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:54:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:37,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:54:37,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:37,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:54:37,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-13 07:54:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:37,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:37,933 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:37,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713317742] [2021-10-13 07:54:37,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713317742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:54:37,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:54:37,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:54:37,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868102899] [2021-10-13 07:54:37,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:54:37,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:37,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:54:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:54:37,938 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:38,100 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-13 07:54:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:54:38,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:54:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:38,104 INFO L225 Difference]: With dead ends: 19 [2021-10-13 07:54:38,104 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:54:38,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:54:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:54:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:54:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:38,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:54:38,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-13 07:54:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:38,109 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:54:38,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:38,110 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:54:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:54:38,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:54:38,113 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:54:38,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:38,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:54:38,321 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:54:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:54:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1320375449, now seen corresponding path program 1 times [2021-10-13 07:54:38,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:54:38,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562722276] [2021-10-13 07:54:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:38,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:54:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:54:38,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:54:38,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:54:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:38,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:54:38,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:38,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-10-13 07:54:38,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-10-13 07:54:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:38,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:39,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:54:39,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562722276] [2021-10-13 07:54:39,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562722276] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:39,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715562953] [2021-10-13 07:54:39,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:39,099 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:54:39,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:54:39,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:54:39,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:54:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 07:54:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:39,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-13 07:54:40,181 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-13 07:54:40,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 38 [2021-10-13 07:54:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:54:40,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:45,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2021-10-13 07:54:45,381 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-10-13 07:54:45,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 1 [2021-10-13 07:54:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:54:45,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [715562953] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:45,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430995744] [2021-10-13 07:54:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:54:45,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:54:45,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:54:45,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:54:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:54:45,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:54:45,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:54:45,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-13 07:54:46,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2021-10-13 07:54:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:46,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:54:46,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 65 [2021-10-13 07:54:46,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2021-10-13 07:54:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:54:46,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430995744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:54:46,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:54:46,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10, 9, 9, 8] total 34 [2021-10-13 07:54:46,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373148829] [2021-10-13 07:54:46,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-13 07:54:46,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:54:46,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-13 07:54:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=951, Unknown=1, NotChecked=0, Total=1122 [2021-10-13 07:54:46,685 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:54:49,681 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-10-13 07:54:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 07:54:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:54:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:54:49,682 INFO L225 Difference]: With dead ends: 25 [2021-10-13 07:54:49,682 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:54:49,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 8751.5ms TimeCoverageRelationStatistics Valid=466, Invalid=1983, Unknown=1, NotChecked=0, Total=2450 [2021-10-13 07:54:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:54:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:54:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:54:49,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-13 07:54:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:54:49,684 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:54:49,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:54:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:54:49,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:54:49,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:54:49,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:54:49,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:50,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:54:50,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:54:50,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:54:50,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:50,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:50,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:50,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:54:50,633 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:54:50,633 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-13 07:54:50,633 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 34) no Hoare annotation was computed. [2021-10-13 07:54:50,634 INFO L857 garLoopResultBuilder]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2021-10-13 07:54:50,634 INFO L853 garLoopResultBuilder]: At program point L13(lines 11 14) the Hoare annotation is: (let ((.cse3 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset))) (let ((.cse2 (bvslt (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)) .cse3))) (and (exists ((v_ULTIMATE.start_main_~i~0_20 (_ BitVec 32))) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse0 (select .cse1 (bvadd (bvmul (_ bv8 32) v_ULTIMATE.start_main_~i~0_20) |ULTIMATE.start_main_~#ad1~0.offset|)))) (and (not (bvslt ULTIMATE.start_main_~i~0 .cse0)) (bvsge v_ULTIMATE.start_main_~i~0_20 (_ bv0 32)) (bvslt v_ULTIMATE.start_main_~i~0_20 (_ bv10 32)) (= (select .cse1 (bvadd (bvmul v_ULTIMATE.start_main_~i~0_20 (_ bv8 32)) |ULTIMATE.start_main_~#ad1~0.offset|)) v_ULTIMATE.start_main_~i~0_20) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) .cse0))))) (= |ULTIMATE.start_check_#res| (_ bv1 32)) (or (not .cse2) (bvslt (bvadd (_ bv2 32) ULTIMATE.start_main_~i~0) .cse3)) (or (not (bvslt ULTIMATE.start_main_~i~0 .cse3)) .cse2) (exists ((v_ULTIMATE.start_main_~i~0_20 (_ BitVec 32))) (and (= (bvadd (bvmul (_ bv8 32) v_ULTIMATE.start_main_~i~0_20) |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) (bvsge v_ULTIMATE.start_main_~i~0_20 (_ bv0 32)) (bvslt v_ULTIMATE.start_main_~i~0_20 (_ bv10 32)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (bvadd (bvmul v_ULTIMATE.start_main_~i~0_20 (_ bv8 32)) |ULTIMATE.start_main_~#ad1~0.offset|)) v_ULTIMATE.start_main_~i~0_20))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) .cse3) (= (_ bv0 32) |ULTIMATE.start_main_~#ad1~0.offset|) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)))) [2021-10-13 07:54:50,634 INFO L853 garLoopResultBuilder]: At program point L32(lines 17 40) the Hoare annotation is: false [2021-10-13 07:54:50,634 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:54:50,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:54:50,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:54:50,634 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2021-10-13 07:54:50,635 INFO L853 garLoopResultBuilder]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (exists ((v_ULTIMATE.start_main_~i~0_20 (_ BitVec 32))) (and (= (bvadd (bvmul (_ bv8 32) v_ULTIMATE.start_main_~i~0_20) |ULTIMATE.start_main_~#ad1~0.offset|) ULTIMATE.start_main_~pa~0.offset) (bvsge v_ULTIMATE.start_main_~i~0_20 (_ bv0 32)) (bvslt v_ULTIMATE.start_main_~i~0_20 (_ bv10 32)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (bvadd (bvmul v_ULTIMATE.start_main_~i~0_20 (_ bv8 32)) |ULTIMATE.start_main_~#ad1~0.offset|)) v_ULTIMATE.start_main_~i~0_20))) (bvslt (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0) (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= (_ bv0 32) |ULTIMATE.start_main_~#ad1~0.offset|) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)) [2021-10-13 07:54:50,635 INFO L857 garLoopResultBuilder]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2021-10-13 07:54:50,635 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2021-10-13 07:54:50,635 INFO L860 garLoopResultBuilder]: At program point L39(lines 16 40) the Hoare annotation is: true [2021-10-13 07:54:50,643 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:54:50,654 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,655 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,655 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,655 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,655 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,656 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,657 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,659 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,659 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,660 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,660 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,671 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,671 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,671 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,677 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,678 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,678 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,678 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,681 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,683 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,685 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,685 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,685 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,686 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:54:50 BoogieIcfgContainer [2021-10-13 07:54:50,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:54:50,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:54:50,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:54:50,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:54:50,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:54:36" (3/4) ... [2021-10-13 07:54:50,694 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:54:50,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-13 07:54:50,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 07:54:50,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:50,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:54:50,740 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: ((~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1) == pa && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && 0bv32 == ad1) && pa == ad1 [2021-10-13 07:54:50,740 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: (((!~bvslt32(i, unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1)]) && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1)])) && \result == 1bv32) && (!~bvslt32(~bvadd64(i, 1bv32), unknown-#memory_int-unknown[pa][pa]) || ~bvslt32(~bvadd64(2bv32, i), unknown-#memory_int-unknown[pa][pa]))) && (!~bvslt32(i, unknown-#memory_int-unknown[pa][pa]) || ~bvslt32(~bvadd64(i, 1bv32), unknown-#memory_int-unknown[pa][pa]))) && (\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: ((~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1) == pa && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20)) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && 0bv32 == ad1) && pa == ad1 [2021-10-13 07:54:50,762 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:54:50,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:54:50,766 INFO L168 Benchmark]: Toolchain (without parser) took 14764.97 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 48.6 MB in the beginning and 72.4 MB in the end (delta: -23.8 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,766 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:50,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 52.6 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.88 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,767 INFO L168 Benchmark]: Boogie Preprocessor took 50.24 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:54:50,768 INFO L168 Benchmark]: RCFGBuilder took 394.84 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 39.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,768 INFO L168 Benchmark]: TraceAbstraction took 13844.92 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 39.4 MB in the beginning and 27.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,769 INFO L168 Benchmark]: Witness Printer took 71.86 ms. Allocated memory is still 94.4 MB. Free memory was 27.4 MB in the beginning and 72.4 MB in the end (delta: -45.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:54:50,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 69.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.3 MB in the beginning and 52.6 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.88 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 51.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.24 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 394.84 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 39.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13844.92 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 39.4 MB in the beginning and 27.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 38.5 MB. Max. memory is 16.1 GB. * Witness Printer took 71.86 ms. Allocated memory is still 94.4 MB. Free memory was 27.4 MB in the beginning and 72.4 MB in the end (delta: -45.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13708.7ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 12.4ms, AutomataDifference: 3223.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 332.2ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 36 SDslu, 17 SDs, 0 SdLazy, 196 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 548.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 8888.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 171 HoareAnnotationTreeSize, 4 FomulaSimplifications, 151 FormulaSimplificationTreeSizeReduction, 101.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 125 FormulaSimplificationTreeSizeReductionInter, 225.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 70.6ms SsaConstructionTime, 167.4ms SatisfiabilityAnalysisTime, 8397.2ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 11 QuantifiedInterpolants, 1075 SizeOfPredicates, 53 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 5/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2021-10-13 07:54:50,790 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,790 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,791 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,791 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,791 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,791 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,792 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,792 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,793 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,797 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,805 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,805 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,805 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,806 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,807 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,807 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,807 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,810 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] Derived loop invariant: (((((((\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: (((!~bvslt32(i, unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1)]) && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1)])) && \result == 1bv32) && (!~bvslt32(~bvadd64(i, 1bv32), unknown-#memory_int-unknown[pa][pa]) || ~bvslt32(~bvadd64(2bv32, i), unknown-#memory_int-unknown[pa][pa]))) && (!~bvslt32(i, unknown-#memory_int-unknown[pa][pa]) || ~bvslt32(~bvadd64(i, 1bv32), unknown-#memory_int-unknown[pa][pa]))) && (\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: ((~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1) == pa && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20)) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && 0bv32 == ad1) && pa == ad1 - InvariantResult [Line: 28]: Loop Invariant [2021-10-13 07:54:50,815 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,816 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] [2021-10-13 07:54:50,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_20,QUANTIFIED] Derived loop invariant: (((\exists v_ULTIMATE.start_main_~i~0_20 : bv32 :: ((~bvadd64(~bvmul32(8bv32, v_ULTIMATE.start_main_~i~0_20), ad1) == pa && ~bvsge32(v_ULTIMATE.start_main_~i~0_20, 0bv32)) && ~bvslt32(v_ULTIMATE.start_main_~i~0_20, 10bv32)) && unknown-#memory_int-unknown[ad1][~bvadd64(~bvmul32(v_ULTIMATE.start_main_~i~0_20, 8bv32), ad1)] == v_ULTIMATE.start_main_~i~0_20) && ~bvslt32(~bvadd64(4294967295bv32, i), unknown-#memory_int-unknown[pa][pa])) && 0bv32 == ad1) && pa == ad1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:54:50,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ee778b4-59ca-4d63-aecd-d8b99c434601/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...