./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7 --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 ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:09:31,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:09:31,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:09:31,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:09:31,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:09:31,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:09:31,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:09:31,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:09:31,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:09:31,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:09:31,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:09:31,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:09:31,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:09:31,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:09:31,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:09:31,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:09:31,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:09:31,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:09:31,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:09:31,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:09:31,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:09:31,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:09:31,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:09:31,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:09:31,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:09:31,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:09:31,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:09:31,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:09:31,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:09:31,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:09:31,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:09:31,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:09:31,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:09:31,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:09:31,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:09:31,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:09:31,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:09:31,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:09:31,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:09:32,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:09:32,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:09:32,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:09:32,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:09:32,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:09:32,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:09:32,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:09:32,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:09:32,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:09:32,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:09:32,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:09:32,038 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:09:32,038 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:09:32,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:09:32,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:09:32,039 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:09:32,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:09:32,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:09:32,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:09:32,040 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:09:32,040 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:09:32,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:09:32,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:09:32,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:09:32,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:09:32,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:09:32,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:09:32,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:09:32,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:09:32,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:09:32,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:09:32,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:09:32,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:09:32,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:09:32,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:09:32,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:09:32,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:09:32,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:09:32,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:09:32,045 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:09:32,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:09:32,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:09:32,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:09:32,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:09:32,046 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2021-11-25 18:09:32,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:09:32,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:09:32,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:09:32,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:09:32,350 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:09:32,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-25 18:09:32,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/c48f4bb59/e66e21a7ccda49f7bb0c912d90a5d488/FLAGfca664558 [2021-11-25 18:09:32,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:09:32,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-25 18:09:32,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/c48f4bb59/e66e21a7ccda49f7bb0c912d90a5d488/FLAGfca664558 [2021-11-25 18:09:33,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/c48f4bb59/e66e21a7ccda49f7bb0c912d90a5d488 [2021-11-25 18:09:33,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:09:33,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:09:33,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:09:33,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:09:33,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:09:33,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed2f5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33, skipping insertion in model container [2021-11-25 18:09:33,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:09:33,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:09:33,448 WARN L230 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-25 18:09:33,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:09:33,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:09:33,480 WARN L230 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-25 18:09:33,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:09:33,494 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:09:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33 WrapperNode [2021-11-25 18:09:33,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:09:33,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:09:33,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:09:33,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:09:33,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,530 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-11-25 18:09:33,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:09:33,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:09:33,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:09:33,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:09:33,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:09:33,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:09:33,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:09:33,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:09:33,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (1/1) ... [2021-11-25 18:09:33,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:09:33,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:33,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:09:33,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:09:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:09:33,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:09:33,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:09:33,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:09:33,676 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2021-11-25 18:09:33,676 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2021-11-25 18:09:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:09:33,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:09:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:09:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:09:33,771 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:09:33,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:09:33,917 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:09:33,945 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:09:33,946 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:09:33,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:33 BoogieIcfgContainer [2021-11-25 18:09:33,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:09:33,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:09:33,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:09:33,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:09:33,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:09:33" (1/3) ... [2021-11-25 18:09:33,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f333365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:09:33, skipping insertion in model container [2021-11-25 18:09:33,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:09:33" (2/3) ... [2021-11-25 18:09:33,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f333365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:09:33, skipping insertion in model container [2021-11-25 18:09:33,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:33" (3/3) ... [2021-11-25 18:09:33,956 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2021-11-25 18:09:33,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:09:33,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:09:34,008 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:09:34,015 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:09:34,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:09:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:09:34,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:34,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:34,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2038165787, now seen corresponding path program 1 times [2021-11-25 18:09:34,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:34,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253792226] [2021-11-25 18:09:34,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:34,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 18:09:34,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253792226] [2021-11-25 18:09:34,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253792226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:34,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:09:34,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:09:34,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233405314] [2021-11-25 18:09:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:34,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:09:34,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:09:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:09:34,380 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:09:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:34,433 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-25 18:09:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:09:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-25 18:09:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:34,443 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:09:34,443 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:09:34,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:09:34,450 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:34,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:09:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:09:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 18:09:34,489 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-25 18:09:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:34,490 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 18:09:34,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:09:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 18:09:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:09:34,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:34,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:34,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:09:34,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:34,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash -524670362, now seen corresponding path program 1 times [2021-11-25 18:09:34,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:34,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810699725] [2021-11-25 18:09:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:34,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 18:09:34,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:34,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810699725] [2021-11-25 18:09:34,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810699725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:34,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330829076] [2021-11-25 18:09:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:34,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:34,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:34,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:34,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:09:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:34,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:09:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:09:34,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:09:34,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330829076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:34,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:09:34,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:09:34,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642442411] [2021-11-25 18:09:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:34,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:09:34,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:09:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:34,727 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:09:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:34,746 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 18:09:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:09:34,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-25 18:09:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:34,754 INFO L225 Difference]: With dead ends: 29 [2021-11-25 18:09:34,754 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:09:34,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:34,758 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:34,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:34,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:09:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:09:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-25 18:09:34,768 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-25 18:09:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-25 18:09:34,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:09:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-25 18:09:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:09:34,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:34,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:34,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:34,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash -664333790, now seen corresponding path program 1 times [2021-11-25 18:09:34,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:34,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637432206] [2021-11-25 18:09:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:34,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 18:09:35,088 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637432206] [2021-11-25 18:09:35,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637432206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:35,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284476514] [2021-11-25 18:09:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:35,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:35,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:35,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:09:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:09:35,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:09:35,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:09:35,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284476514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:09:35,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:09:35,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 18:09:35,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341828671] [2021-11-25 18:09:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:09:35,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:09:35,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:09:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:35,213 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:09:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:35,231 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 18:09:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:09:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-25 18:09:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:35,233 INFO L225 Difference]: With dead ends: 27 [2021-11-25 18:09:35,233 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 18:09:35,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:09:35,235 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:35,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 18:09:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 18:09:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-25 18:09:35,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-25 18:09:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:35,243 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-25 18:09:35,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:09:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-25 18:09:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:09:35,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:35,245 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:35,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:35,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-25 18:09:35,468 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1922418725, now seen corresponding path program 1 times [2021-11-25 18:09:35,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:35,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948973620] [2021-11-25 18:09:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:35,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 18:09:35,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:35,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948973620] [2021-11-25 18:09:35,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948973620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124835023] [2021-11-25 18:09:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:35,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:35,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:35,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:09:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:35,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:09:35,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 18:09:35,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 18:09:35,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124835023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [722152023] [2021-11-25 18:09:35,872 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:09:35,872 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:35,877 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:35,885 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:35,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,010 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:09:36,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:09:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:09:36,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:09:36,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:36,224 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:09:36,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:09:36,385 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 16 treesize of output 12 [2021-11-25 18:09:36,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:09:36,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 18:09:36,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,792 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 18:09:36,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 18:09:36,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:36,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:09:36,887 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 13 treesize of output 9 [2021-11-25 18:09:37,077 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:09:37,128 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:42,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_5 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_5 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_5 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:09:42,175 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:42,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:42,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-25 18:09:42,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245436375] [2021-11-25 18:09:42,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:42,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:09:42,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:09:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:42,178 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:09:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:42,211 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 18:09:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:09:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-25 18:09:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:42,213 INFO L225 Difference]: With dead ends: 36 [2021-11-25 18:09:42,213 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:09:42,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:42,215 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:42,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:09:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:09:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 18:09:42,222 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-25 18:09:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:42,222 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 18:09:42,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:09:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 18:09:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:09:42,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:42,224 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:42,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:42,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:42,440 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 763213520, now seen corresponding path program 2 times [2021-11-25 18:09:42,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:42,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388786449] [2021-11-25 18:09:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:42,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 18:09:42,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388786449] [2021-11-25 18:09:42,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388786449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988013877] [2021-11-25 18:09:42,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:09:42,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:42,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:42,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:09:42,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 18:09:42,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:09:42,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:09:42,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 18:09:42,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 18:09:42,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988013877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:42,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587201243] [2021-11-25 18:09:42,751 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:09:42,752 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:42,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:42,752 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:42,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,794 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:09:42,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:09:42,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:09:42,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:09:42,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:42,893 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:09:42,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:09:42,938 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 16 treesize of output 12 [2021-11-25 18:09:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:09:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:43,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:09:43,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,202 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:09:43,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:09:43,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:43,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:09:43,259 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 13 treesize of output 9 [2021-11-25 18:09:43,401 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:09:43,447 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:50,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_11 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_11 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_11 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_11 4294967296) (- 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2021-11-25 18:09:50,397 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:50,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:50,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-25 18:09:50,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023250250] [2021-11-25 18:09:50,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:50,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:09:50,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:09:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:50,399 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:09:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:50,433 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-25 18:09:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:09:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-25 18:09:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:50,435 INFO L225 Difference]: With dead ends: 38 [2021-11-25 18:09:50,435 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 18:09:50,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:09:50,436 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:50,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 18:09:50,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 18:09:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 18:09:50,442 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-25 18:09:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:50,443 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 18:09:50,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:09:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 18:09:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:09:50,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:50,444 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:50,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:50,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:50,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:50,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash 843318224, now seen corresponding path program 3 times [2021-11-25 18:09:50,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:50,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582916975] [2021-11-25 18:09:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:50,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 18:09:50,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582916975] [2021-11-25 18:09:50,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582916975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694208417] [2021-11-25 18:09:50,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:09:50,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:50,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:50,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:09:50,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:09:50,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:09:50,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:09:50,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 18:09:50,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 18:09:51,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694208417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1209074522] [2021-11-25 18:09:51,097 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:09:51,098 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:51,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:51,098 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:51,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:51,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,128 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:09:51,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:09:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,156 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:09:51,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:09:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:09:51,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:51,253 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:09:51,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:09:51,346 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 16 treesize of output 12 [2021-11-25 18:09:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:09:51,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:51,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:09:51,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,586 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:09:51,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:09:51,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:51,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:09:51,630 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 13 treesize of output 9 [2021-11-25 18:09:51,775 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:09:51,811 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:56,690 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_17 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_17 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_17 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:09:56,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:56,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:56,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-25 18:09:56,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134774227] [2021-11-25 18:09:56,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:56,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:09:56,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:09:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:09:56,692 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:09:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:09:56,744 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-25 18:09:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 18:09:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2021-11-25 18:09:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:09:56,746 INFO L225 Difference]: With dead ends: 49 [2021-11-25 18:09:56,746 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 18:09:56,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:09:56,747 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:09:56,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:09:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 18:09:56,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 18:09:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:09:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-25 18:09:56,754 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-25 18:09:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:09:56,755 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-25 18:09:56,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:09:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-25 18:09:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:09:56,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:09:56,757 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:09:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:09:56,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:56,976 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:09:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:09:56,976 INFO L85 PathProgramCache]: Analyzing trace with hash 834270235, now seen corresponding path program 4 times [2021-11-25 18:09:56,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:09:56,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745854315] [2021-11-25 18:09:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:09:56,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:09:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 18:09:57,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:09:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745854315] [2021-11-25 18:09:57,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745854315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:09:57,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949339845] [2021-11-25 18:09:57,191 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:09:57,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:09:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:09:57,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:09:57,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:09:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:09:57,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:09:57,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:09:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 18:09:57,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 18:09:57,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949339845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:57,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [776855961] [2021-11-25 18:09:57,593 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:09:57,593 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:57,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:57,593 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:57,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,626 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:09:57,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:09:57,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:09:57,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:09:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,708 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:09:57,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:09:57,743 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 16 treesize of output 12 [2021-11-25 18:09:57,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:09:57,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:09:57,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:09:57,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,951 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:09:57,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:09:57,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:09:57,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:09:57,988 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 13 treesize of output 9 [2021-11-25 18:09:58,127 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:09:58,168 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:03,022 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_24 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_24 4294967296) (- 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:03,023 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:03,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:03,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-25 18:10:03,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794527054] [2021-11-25 18:10:03,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:03,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 18:10:03,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 18:10:03,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:10:03,025 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:03,093 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-25 18:10:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:10:03,094 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-11-25 18:10:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:03,095 INFO L225 Difference]: With dead ends: 62 [2021-11-25 18:10:03,095 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 18:10:03,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:10:03,097 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:03,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 18:10:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 18:10:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-25 18:10:03,105 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-25 18:10:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:03,105 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-25 18:10:03,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-25 18:10:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-25 18:10:03,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:03,107 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:03,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 18:10:03,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:03,329 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash -208173989, now seen corresponding path program 5 times [2021-11-25 18:10:03,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:03,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711002489] [2021-11-25 18:10:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:03,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 18:10:03,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711002489] [2021-11-25 18:10:03,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711002489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:03,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343508874] [2021-11-25 18:10:03,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:10:03,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:03,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:03,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:10:03,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:10:03,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:03,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:10:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-25 18:10:03,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-25 18:10:04,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343508874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649906783] [2021-11-25 18:10:04,116 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:04,116 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:04,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:04,116 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:04,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:04,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,147 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:10:04,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:10:04,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,166 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:04,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:04,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:10:04,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,243 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:10:04,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:10:04,278 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 16 treesize of output 12 [2021-11-25 18:10:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:04,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 18:10:04,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,545 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 18:10:04,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 18:10:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:04,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:04,612 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 13 treesize of output 9 [2021-11-25 18:10:04,742 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:04,771 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:05,923 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_bAnd_~res~0_BEFORE_RETURN_29 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_29 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_29 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_29 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:05,923 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:05,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:05,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-25 18:10:05,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308434027] [2021-11-25 18:10:05,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:05,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-25 18:10:05,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-25 18:10:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 18:10:05,926 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:06,021 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-25 18:10:06,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-25 18:10:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-25 18:10:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:06,026 INFO L225 Difference]: With dead ends: 69 [2021-11-25 18:10:06,026 INFO L226 Difference]: Without dead ends: 50 [2021-11-25 18:10:06,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 18:10:06,029 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:06,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-25 18:10:06,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-25 18:10:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-25 18:10:06,036 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-25 18:10:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:06,037 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-25 18:10:06,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-25 18:10:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 18:10:06,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:06,039 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:06,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:06,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:10:06,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1077789606, now seen corresponding path program 6 times [2021-11-25 18:10:06,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:06,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805997584] [2021-11-25 18:10:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:06,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:06,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:06,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805997584] [2021-11-25 18:10:06,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805997584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:06,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660901513] [2021-11-25 18:10:06,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:10:06,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:06,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:06,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:06,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:10:06,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:10:06,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:06,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 18:10:06,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:07,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:07,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660901513] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:07,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [288681339] [2021-11-25 18:10:07,840 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:07,840 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:07,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:07,841 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:07,841 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:07,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,873 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:10:07,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:10:07,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,899 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:07,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:07,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:10:07,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:07,984 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:10:07,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:10:08,018 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 16 treesize of output 12 [2021-11-25 18:10:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 18:10:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,240 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 18:10:08,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 18:10:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:08,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:08,315 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 13 treesize of output 9 [2021-11-25 18:10:08,443 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:08,478 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:13,724 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:13,724 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:13,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:13,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-25 18:10:13,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227075720] [2021-11-25 18:10:13,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:13,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 18:10:13,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:13,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 18:10:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=2697, Unknown=1, NotChecked=0, Total=4032 [2021-11-25 18:10:13,729 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:13,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:13,844 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-25 18:10:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 18:10:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2021-11-25 18:10:13,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:13,846 INFO L225 Difference]: With dead ends: 100 [2021-11-25 18:10:13,847 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 18:10:13,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1334, Invalid=2697, Unknown=1, NotChecked=0, Total=4032 [2021-11-25 18:10:13,849 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:13,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 18:10:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-25 18:10:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-25 18:10:13,859 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-25 18:10:13,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:13,860 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-25 18:10:13,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-25 18:10:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 18:10:13,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:13,862 INFO L514 BasicCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:13,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:14,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:10:14,079 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1675595141, now seen corresponding path program 7 times [2021-11-25 18:10:14,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:14,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419809734] [2021-11-25 18:10:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:14,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:15,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419809734] [2021-11-25 18:10:15,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419809734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876938882] [2021-11-25 18:10:15,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:10:15,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:15,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:15,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:15,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:10:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 18:10:15,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:15,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:18,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876938882] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:18,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168268857] [2021-11-25 18:10:18,880 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:18,880 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:18,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:18,880 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:18,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:18,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:18,915 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:18,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:18,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:18,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:10:18,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:18,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:10:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:18,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:19,023 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:10:19,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:10:19,084 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 16 treesize of output 12 [2021-11-25 18:10:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:19,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:19,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:10:19,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,302 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:10:19,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:10:19,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:19,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:19,340 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 13 treesize of output 9 [2021-11-25 18:10:19,459 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:19,490 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:22,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (exists ((v_bAnd_~res~0_BEFORE_RETURN_42 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_42 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_42 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_42 4294967296) (- 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:22,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:22,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:22,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-25 18:10:22,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945267333] [2021-11-25 18:10:22,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:22,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 18:10:22,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 18:10:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 18:10:22,781 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:23,061 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-25 18:10:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 18:10:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2021-11-25 18:10:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:23,064 INFO L225 Difference]: With dead ends: 150 [2021-11-25 18:10:23,064 INFO L226 Difference]: Without dead ends: 125 [2021-11-25 18:10:23,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 18:10:23,072 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:23,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-25 18:10:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-25 18:10:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-25 18:10:23,102 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-25 18:10:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:23,104 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-25 18:10:23,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-25 18:10:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 18:10:23,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:23,114 INFO L514 BasicCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:23,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 18:10:23,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:23,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash -483746597, now seen corresponding path program 8 times [2021-11-25 18:10:23,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:23,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162627192] [2021-11-25 18:10:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:23,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-25 18:10:27,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:27,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162627192] [2021-11-25 18:10:27,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162627192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:27,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144527194] [2021-11-25 18:10:27,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:10:27,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:27,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:27,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:10:27,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 18:10:27,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:27,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:10:27,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2021-11-25 18:10:27,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-25 18:10:28,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144527194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1032409551] [2021-11-25 18:10:28,097 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:28,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:28,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:28,098 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:28,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,146 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:10:28,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:10:28,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,167 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:28,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:10:28,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,247 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:10:28,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:10:28,286 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 16 treesize of output 12 [2021-11-25 18:10:28,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:28,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:28,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:10:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,494 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:10:28,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:10:28,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:28,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:28,546 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 13 treesize of output 9 [2021-11-25 18:10:28,656 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:28,712 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:36,561 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (exists ((v_bAnd_~res~0_BEFORE_RETURN_48 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_48 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_48 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_48 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:36,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:36,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:36,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-25 18:10:36,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433823576] [2021-11-25 18:10:36,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:36,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-25 18:10:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-25 18:10:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 18:10:36,576 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:36,749 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-25 18:10:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-25 18:10:36,749 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-11-25 18:10:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:36,751 INFO L225 Difference]: With dead ends: 155 [2021-11-25 18:10:36,751 INFO L226 Difference]: Without dead ends: 130 [2021-11-25 18:10:36,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2021-11-25 18:10:36,755 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:36,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:36,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-25 18:10:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-25 18:10:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-25 18:10:36,767 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-25 18:10:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:36,767 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-25 18:10:36,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-25 18:10:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-25 18:10:36,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:36,770 INFO L514 BasicCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:36,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:36,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 18:10:36,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:36,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -531749082, now seen corresponding path program 9 times [2021-11-25 18:10:36,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:36,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855062267] [2021-11-25 18:10:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:36,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 18:10:40,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:40,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855062267] [2021-11-25 18:10:40,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855062267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:40,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468922519] [2021-11-25 18:10:40,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:10:40,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:40,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:40,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:10:41,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:10:41,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:41,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-25 18:10:41,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 18:10:41,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-25 18:10:42,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468922519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:42,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892840023] [2021-11-25 18:10:42,162 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:42,162 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:42,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:42,163 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:42,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:42,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,191 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:42,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:42,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:10:42,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:10:42,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,271 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:10:42,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:10:42,304 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 16 treesize of output 12 [2021-11-25 18:10:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:42,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:10:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,524 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:10:42,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:10:42,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:42,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:42,561 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 13 treesize of output 9 [2021-11-25 18:10:42,677 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:42,717 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:46,496 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (exists ((v_bAnd_~res~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_53 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_53 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_53 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:46,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:46,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:46,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-25 18:10:46,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119766273] [2021-11-25 18:10:46,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:46,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-25 18:10:46,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-25 18:10:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 18:10:46,500 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:46,656 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-25 18:10:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-25 18:10:46,657 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2021-11-25 18:10:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:46,659 INFO L225 Difference]: With dead ends: 160 [2021-11-25 18:10:46,659 INFO L226 Difference]: Without dead ends: 131 [2021-11-25 18:10:46,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2021-11-25 18:10:46,661 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:46,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-25 18:10:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-25 18:10:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-25 18:10:46,672 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-25 18:10:46,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:46,673 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-25 18:10:46,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 18:10:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-25 18:10:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 18:10:46,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:46,675 INFO L514 BasicCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:46,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:46,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 18:10:46,891 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1592501115, now seen corresponding path program 10 times [2021-11-25 18:10:46,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:46,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734178606] [2021-11-25 18:10:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:46,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 18:10:47,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734178606] [2021-11-25 18:10:47,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734178606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:47,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489911028] [2021-11-25 18:10:47,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:10:47,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:47,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:47,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:47,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:10:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:10:47,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 18:10:47,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-25 18:10:48,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489911028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:48,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1464011546] [2021-11-25 18:10:48,022 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:48,022 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:48,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:48,022 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:48,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:48,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,064 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:48,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:48,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:10:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:10:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:48,180 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:10:48,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:10:48,229 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 16 treesize of output 12 [2021-11-25 18:10:48,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:48,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:10:48,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,430 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:10:48,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:10:48,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:48,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:48,466 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 13 treesize of output 9 [2021-11-25 18:10:48,582 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:48,645 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:49,530 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8552#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (exists ((v_bAnd_~res~0_BEFORE_RETURN_59 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_59 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_59 4294967296) (+ (- 4294967296) (mod v_bAnd_~res~0_BEFORE_RETURN_59 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:49,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:49,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:49,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-25 18:10:49,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637813503] [2021-11-25 18:10:49,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:49,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 18:10:49,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 18:10:49,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:10:49,532 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:10:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:49,581 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-25 18:10:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:10:49,581 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2021-11-25 18:10:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:49,583 INFO L225 Difference]: With dead ends: 171 [2021-11-25 18:10:49,583 INFO L226 Difference]: Without dead ends: 143 [2021-11-25 18:10:49,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:10:49,585 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:49,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:10:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-25 18:10:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-25 18:10:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:49,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-25 18:10:49,595 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-25 18:10:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:49,596 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-25 18:10:49,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:10:49,596 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-25 18:10:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 18:10:49,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:49,599 INFO L514 BasicCegarLoop]: trace histogram [100, 66, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:49,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:49,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:49,807 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1757404155, now seen corresponding path program 11 times [2021-11-25 18:10:49,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19834830] [2021-11-25 18:10:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:49,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6110 trivial. 0 not checked. [2021-11-25 18:10:50,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19834830] [2021-11-25 18:10:50,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19834830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:50,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877834781] [2021-11-25 18:10:50,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:10:50,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:50,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:50,328 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:50,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:10:50,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:10:50,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:10:50,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 1062 proven. 21 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2021-11-25 18:10:50,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2021-11-25 18:10:51,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877834781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:51,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [851119476] [2021-11-25 18:10:51,277 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:51,277 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:51,277 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:51,278 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:51,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:51,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,310 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:10:51,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:10:51,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,329 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:51,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:10:51,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:51,413 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:10:51,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:10:51,503 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 16 treesize of output 12 [2021-11-25 18:10:51,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:51,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:10:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,710 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:10:51,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:10:51,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:51,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:51,751 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 13 treesize of output 9 [2021-11-25 18:10:51,861 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:51,911 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:52,890 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10355#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (exists ((v_bAnd_~res~0_BEFORE_RETURN_66 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_66 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_66 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_66 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:52,890 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:52,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:52,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-25 18:10:52,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711838074] [2021-11-25 18:10:52,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:52,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 18:10:52,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 18:10:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 18:10:52,892 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:52,971 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-25 18:10:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-25 18:10:52,971 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 192 [2021-11-25 18:10:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:52,973 INFO L225 Difference]: With dead ends: 192 [2021-11-25 18:10:52,973 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 18:10:52,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=479, Invalid=2173, Unknown=0, NotChecked=0, Total=2652 [2021-11-25 18:10:52,974 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:52,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 18:10:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-25 18:10:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-25 18:10:52,981 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-25 18:10:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:52,981 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-25 18:10:52,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:10:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-25 18:10:52,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-25 18:10:52,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:52,984 INFO L514 BasicCegarLoop]: trace histogram [100, 69, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:53,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:53,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:10:53,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1409666835, now seen corresponding path program 12 times [2021-11-25 18:10:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:53,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525245623] [2021-11-25 18:10:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:53,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 18:10:53,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525245623] [2021-11-25 18:10:53,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525245623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:53,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696984635] [2021-11-25 18:10:53,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:10:53,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:53,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:53,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:10:54,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:10:54,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:10:54,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 18:10:54,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 18:10:54,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:10:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-25 18:10:55,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696984635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:10:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796371718] [2021-11-25 18:10:55,537 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:10:55,537 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:10:55,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:10:55,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:10:55,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:10:55,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,566 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:10:55,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:10:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:10:55,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:10:55,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:10:55,656 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:10:55,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:10:55,739 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 16 treesize of output 12 [2021-11-25 18:10:55,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:10:55,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 18:10:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,950 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 18:10:55,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 18:10:55,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:10:55,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:10:55,995 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 13 treesize of output 9 [2021-11-25 18:10:56,088 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:10:56,112 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:10:56,998 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12296#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_72 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_72 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_72 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_72 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:10:56,999 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:10:56,999 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:10:56,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-25 18:10:56,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799422338] [2021-11-25 18:10:56,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:10:57,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-25 18:10:57,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:10:57,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-25 18:10:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 18:10:57,002 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:10:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:10:57,082 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-25 18:10:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-25 18:10:57,082 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2021-11-25 18:10:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:10:57,084 INFO L225 Difference]: With dead ends: 226 [2021-11-25 18:10:57,084 INFO L226 Difference]: Without dead ends: 177 [2021-11-25 18:10:57,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2021-11-25 18:10:57,085 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:10:57,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:10:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-25 18:10:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-25 18:10:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:10:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-25 18:10:57,095 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-25 18:10:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:10:57,095 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-25 18:10:57,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:10:57,096 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-25 18:10:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-25 18:10:57,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:10:57,100 INFO L514 BasicCegarLoop]: trace histogram [144, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:10:57,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:10:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 18:10:57,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:10:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:10:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2105385413, now seen corresponding path program 13 times [2021-11-25 18:10:57,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:10:57,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497965519] [2021-11-25 18:10:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:10:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:10:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 18:10:58,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:10:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497965519] [2021-11-25 18:10:58,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497965519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:10:58,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950631752] [2021-11-25 18:10:58,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:10:58,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:10:58,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:10:58,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:10:58,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 18:10:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:10:59,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-25 18:10:59,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:10:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 4804 proven. 1176 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 18:10:59,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-25 18:11:02,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950631752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:02,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1818089516] [2021-11-25 18:11:02,559 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:11:02,559 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:02,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:02,560 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:02,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:02,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,604 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:11:02,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:11:02,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:11:02,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:11:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:02,690 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:11:02,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:11:02,738 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 16 treesize of output 12 [2021-11-25 18:11:02,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:11:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:02,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:11:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:02,964 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:11:02,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:11:03,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:03,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:11:03,014 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 13 treesize of output 9 [2021-11-25 18:11:03,149 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:11:03,183 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:11:10,383 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14855#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_bAnd_~res~0_BEFORE_RETURN_78 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_78 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_78 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_78 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:11:10,383 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:11:10,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:11:10,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-25 18:11:10,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3303658] [2021-11-25 18:11:10,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:11:10,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-25 18:11:10,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-25 18:11:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 18:11:10,388 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:11:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:10,556 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-25 18:11:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-25 18:11:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 278 [2021-11-25 18:11:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:10,560 INFO L225 Difference]: With dead ends: 301 [2021-11-25 18:11:10,560 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 18:11:10,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2021-11-25 18:11:10,562 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:10,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:11:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 18:11:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-25 18:11:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:11:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-25 18:11:10,576 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-25 18:11:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:10,577 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-25 18:11:10,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 18:11:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-25 18:11:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-25 18:11:10,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:10,581 INFO L514 BasicCegarLoop]: trace histogram [294, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:10,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:10,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 18:11:10,795 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1104262907, now seen corresponding path program 14 times [2021-11-25 18:11:10,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766930480] [2021-11-25 18:11:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:10,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 24455 refuted. 0 times theorem prover too weak. 24662 trivial. 0 not checked. [2021-11-25 18:11:14,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:14,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766930480] [2021-11-25 18:11:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766930480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:14,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051574265] [2021-11-25 18:11:14,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:11:14,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:14,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:14,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:11:17,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-25 18:11:17,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:11:17,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 18:11:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 19606 proven. 105 refuted. 0 times theorem prover too weak. 29406 trivial. 0 not checked. [2021-11-25 18:11:18,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49012 trivial. 0 not checked. [2021-11-25 18:11:19,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051574265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [48764135] [2021-11-25 18:11:19,741 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:11:19,741 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:19,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:19,741 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:19,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:19,786 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:11:19,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:11:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:19,807 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:11:19,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:11:19,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:19,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:11:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:19,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:19,882 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:11:19,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:11:19,945 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 16 treesize of output 12 [2021-11-25 18:11:19,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:19,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:11:20,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:20,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:11:20,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,122 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:11:20,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:11:20,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:20,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:11:20,160 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 13 treesize of output 9 [2021-11-25 18:11:20,320 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:11:20,350 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:11:26,114 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18594#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (exists ((v_bAnd_~res~0_BEFORE_RETURN_84 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_84 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_84 4294967296) (+ (- 4294967296) (mod v_bAnd_~res~0_BEFORE_RETURN_84 4294967296))))) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:11:26,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:11:26,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:11:26,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-25 18:11:26,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022715903] [2021-11-25 18:11:26,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:11:26,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-25 18:11:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-25 18:11:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 18:11:26,120 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:11:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:26,331 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-25 18:11:26,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-25 18:11:26,331 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 428 [2021-11-25 18:11:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:26,333 INFO L225 Difference]: With dead ends: 368 [2021-11-25 18:11:26,333 INFO L226 Difference]: Without dead ends: 244 [2021-11-25 18:11:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5605, Invalid=14987, Unknown=0, NotChecked=0, Total=20592 [2021-11-25 18:11:26,359 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:26,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:11:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-25 18:11:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-25 18:11:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:11:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-25 18:11:26,375 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-25 18:11:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:26,376 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-25 18:11:26,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 18:11:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-25 18:11:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-25 18:11:26,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:26,382 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:26,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:26,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:11:26,595 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1043142509, now seen corresponding path program 15 times [2021-11-25 18:11:26,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:26,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613987458] [2021-11-25 18:11:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:26,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 18:11:27,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613987458] [2021-11-25 18:11:27,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613987458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820739252] [2021-11-25 18:11:27,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:11:27,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:27,475 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:27,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 18:11:27,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:11:27,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:11:27,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2125 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 18:11:27,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 20004 proven. 465 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-25 18:11:28,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 18:11:30,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820739252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:30,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [432953319] [2021-11-25 18:11:30,073 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:11:30,074 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:30,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:30,074 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:30,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,098 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:11:30,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:11:30,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,116 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:11:30,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:11:30,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 18:11:30,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:30,185 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 18:11:30,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 18:11:30,250 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 16 treesize of output 12 [2021-11-25 18:11:30,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:11:30,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 18:11:30,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,416 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 18:11:30,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 18:11:30,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:30,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:11:30,484 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 13 treesize of output 9 [2021-11-25 18:11:30,621 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:11:30,651 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:11:33,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22549#(and (exists ((v_bAnd_~res~0_BEFORE_RETURN_89 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_89 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_89 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_89 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:11:33,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:11:33,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:11:33,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-25 18:11:33,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253775991] [2021-11-25 18:11:33,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:11:33,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-25 18:11:33,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-25 18:11:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2140, Invalid=3866, Unknown=0, NotChecked=0, Total=6006 [2021-11-25 18:11:33,634 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 18:11:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:33,719 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-25 18:11:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-25 18:11:33,727 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2021-11-25 18:11:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:33,729 INFO L225 Difference]: With dead ends: 383 [2021-11-25 18:11:33,729 INFO L226 Difference]: Without dead ends: 276 [2021-11-25 18:11:33,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2140, Invalid=3866, Unknown=0, NotChecked=0, Total=6006 [2021-11-25 18:11:33,731 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:33,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:11:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-25 18:11:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-25 18:11:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:11:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-25 18:11:33,744 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-25 18:11:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:33,745 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-25 18:11:33,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 18:11:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-25 18:11:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-25 18:11:33,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:33,749 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 62, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:33,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:33,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:11:33,971 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash -64332435, now seen corresponding path program 16 times [2021-11-25 18:11:33,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:33,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984392577] [2021-11-25 18:11:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:33,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 18:11:35,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:35,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984392577] [2021-11-25 18:11:35,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984392577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:11:35,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794132576] [2021-11-25 18:11:35,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:11:35,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:35,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:35,956 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:11:35,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 18:11:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 18:11:36,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 20004 proven. 1953 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-25 18:11:37,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:11:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-25 18:11:39,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794132576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:11:39,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338042797] [2021-11-25 18:11:39,790 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 18:11:39,790 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:11:39,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:11:39,790 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:11:39,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:11:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,813 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:11:39,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 18:11:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,831 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:11:39,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 18:11:39,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 18:11:39,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,893 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 18:11:39,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 18:11:39,917 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 16 treesize of output 12 [2021-11-25 18:11:39,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:39,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 18:11:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:11:40,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 18:11:40,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,121 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 18:11:40,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 18:11:40,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:11:40,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 18:11:40,160 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 13 treesize of output 9 [2021-11-25 18:11:40,268 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 12 for LOIs [2021-11-25 18:11:40,300 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:11:41,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26829#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (exists ((v_bAnd_~res~0_BEFORE_RETURN_95 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bAnd_~res~0_BEFORE_RETURN_95 4294967296) 2147483647) (mod v_bAnd_~res~0_BEFORE_RETURN_95 4294967296) (+ (mod v_bAnd_~res~0_BEFORE_RETURN_95 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2021-11-25 18:11:41,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:11:41,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:11:41,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-25 18:11:41,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051615013] [2021-11-25 18:11:41,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:11:41,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-25 18:11:41,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-25 18:11:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5211, Invalid=7899, Unknown=0, NotChecked=0, Total=13110 [2021-11-25 18:11:41,527 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 18:11:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:41,695 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-25 18:11:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-25 18:11:41,696 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 479 [2021-11-25 18:11:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:41,699 INFO L225 Difference]: With dead ends: 420 [2021-11-25 18:11:41,699 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 18:11:41,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5211, Invalid=7899, Unknown=0, NotChecked=0, Total=13110 [2021-11-25 18:11:41,701 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:41,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:11:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 18:11:41,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-25 18:11:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.0097402597402598) internal successors, (311), 308 states have internal predecessors, (311), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:11:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-25 18:11:41,717 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-25 18:11:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:41,718 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-25 18:11:41,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 18:11:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-25 18:11:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-25 18:11:41,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:41,721 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:41,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:41,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:41,922 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -6882064, now seen corresponding path program 17 times [2021-11-25 18:11:41,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:41,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887589671] [2021-11-25 18:11:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:41,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:11:55,228 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:12:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:12:01,408 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:12:01,408 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:12:01,409 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:12:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:12:01,414 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-25 18:12:01,419 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:12:01,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:12:01 BoogieIcfgContainer [2021-11-25 18:12:01,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:12:01,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:12:01,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:12:01,783 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:12:01,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:09:33" (3/4) ... [2021-11-25 18:12:01,786 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:12:01,786 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:12:01,786 INFO L158 Benchmark]: Toolchain (without parser) took 148552.89ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 78.3MB in the beginning and 630.5MB in the end (delta: -552.2MB). Peak memory consumption was 582.0MB. Max. memory is 16.1GB. [2021-11-25 18:12:01,787 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:12:01,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.80ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 84.7MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:12:01,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.35ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 83.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:12:01,787 INFO L158 Benchmark]: Boogie Preprocessor took 48.68ms. Allocated memory is still 111.1MB. Free memory was 83.2MB in the beginning and 82.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:12:01,789 INFO L158 Benchmark]: RCFGBuilder took 368.12ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 70.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:12:01,790 INFO L158 Benchmark]: TraceAbstraction took 147831.83ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 69.8MB in the beginning and 630.5MB in the end (delta: -560.7MB). Peak memory consumption was 796.9MB. Max. memory is 16.1GB. [2021-11-25 18:12:01,790 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 1.2GB. Free memory is still 630.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:12:01,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.80ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 84.7MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.35ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 83.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.68ms. Allocated memory is still 111.1MB. Free memory was 83.2MB in the beginning and 82.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.12ms. Allocated memory is still 111.1MB. Free memory was 81.6MB in the beginning and 70.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 147831.83ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 69.8MB in the beginning and 630.5MB in the end (delta: -560.7MB). Peak memory consumption was 796.9MB. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 1.2GB. Free memory is still 630.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L31] int x[100]; [L32] int temp; [L33] int ret; [L34] int ret2; [L35] int ret5; [L37] int i = 0; VAL [i=0, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=1, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=2, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=3, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=4, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=5, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=6, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=7, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=8, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=9, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=10, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=11, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=12, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=13, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=14, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=15, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=16, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=17, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=18, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=19, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=20, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=21, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=22, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=23, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=24, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=25, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=26, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=27, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=28, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=29, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=30, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=31, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=32, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=33, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=34, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=35, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=36, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=37, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=38, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=39, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=40, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=41, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=42, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=43, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=44, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=45, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=46, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=47, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=48, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=49, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=50, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=51, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=52, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=53, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=54, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=55, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=56, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=57, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=58, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=59, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=60, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=61, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=62, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=63, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=64, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=65, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=66, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=67, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=68, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=69, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=70, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=71, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=72, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=73, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=74, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=75, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=76, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=77, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=78, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=79, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=80, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=81, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=82, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=83, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=84, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=85, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=86, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=87, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=88, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=89, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=90, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=91, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=92, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=93, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=94, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=95, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=96, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=97, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=98, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=99, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=100, x={3:0}] [L37] COND FALSE !(i < 100) VAL [i=100, x={3:0}] [L41] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L41] RET, EXPR bAnd(x) VAL [bAnd(x)=61, i=100, x={3:0}] [L41] ret = bAnd(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp VAL [i=100, ret=61, temp=-3, x={3:0}] [L44] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L44] RET, EXPR bAnd(x) VAL [bAnd(x)=-1, i=100, ret=61, temp=-3, x={3:0}] [L44] ret2 = bAnd(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=1, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=2, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=3, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=4, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=5, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=6, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=7, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=8, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=9, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=10, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=11, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=12, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=13, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=14, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=15, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=16, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=17, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=18, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=19, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=20, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=21, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=22, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=23, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=24, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=25, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=26, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=27, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=28, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=29, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=30, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=31, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=32, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=33, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=34, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=35, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=36, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=37, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=38, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=39, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=40, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=41, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=42, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=43, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=44, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=45, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=46, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=47, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=48, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=49, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=50, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=51, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=52, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=53, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=54, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=55, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=56, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=57, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=58, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=59, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=60, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=61, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=62, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=63, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=64, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=65, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=66, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=67, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=68, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=69, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=70, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=71, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=72, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=73, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=74, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=75, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=76, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=77, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=78, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=79, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=80, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=81, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=82, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=83, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=84, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=85, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=86, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=87, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=88, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=89, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=90, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=91, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=92, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=93, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=94, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=95, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=96, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=97, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=98, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=99, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=100, i=99, ret=61, ret2=-1, temp=-3, x={3:0}] [L50] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L50] RET, EXPR bAnd(x) VAL [bAnd(x)=62, i=99, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L50] ret5 = bAnd(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=99, i=100, ret=61, ret2=-1, ret5=62, temp=-3, x={3:0}] [L53] reach_error() VAL [i=99, i=100, ret=61, ret2=-1, ret5=62, temp=-3, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 147.4s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1257 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 229 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9225 GetRequests, 8076 SyntacticMatches, 2 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21187 ImplicationChecksByTransitivity, 90.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=19, InterpolantAutomatonStates: 962, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 19.0s SatisfiabilityAnalysisTime, 38.8s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 8616 ConstructedInterpolants, 0 QuantifiedInterpolants, 11458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 12756 ConjunctsInSsa, 421 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 531682/606421 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 18:12:01,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7 --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 ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:12:04,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:12:04,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:12:04,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:12:04,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:12:04,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:12:04,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:12:04,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:12:04,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:12:04,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:12:04,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:12:04,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:12:04,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:12:04,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:12:04,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:12:04,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:12:04,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:12:04,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:12:04,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:12:04,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:12:04,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:12:04,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:12:04,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:12:04,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:12:04,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:12:04,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:12:04,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:12:04,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:12:04,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:12:04,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:12:04,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:12:04,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:12:04,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:12:04,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:12:04,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:12:04,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:12:04,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:12:04,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:12:04,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:12:04,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:12:04,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:12:04,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:12:04,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:12:04,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:12:04,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:12:04,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:12:04,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:12:04,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:12:04,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:12:04,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:12:04,291 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:12:04,291 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:12:04,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:12:04,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:12:04,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:12:04,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:12:04,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:12:04,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:12:04,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:12:04,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:12:04,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:12:04,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:12:04,296 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:12:04,296 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:12:04,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:12:04,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:12:04,297 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:12:04,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:12:04,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:12:04,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:12:04,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:12:04,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:12:04,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:12:04,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:12:04,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:12:04,299 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:12:04,299 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:04,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:12:04,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:12:04,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:12:04,300 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2021-11-25 18:12:04,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:12:04,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:12:04,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:12:04,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:12:04,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:12:04,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-25 18:12:04,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/abd5bf278/1b7bb4d2ecf445739f7a5068ea838391/FLAGda04cdca8 [2021-11-25 18:12:05,218 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:12:05,221 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-25 18:12:05,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/abd5bf278/1b7bb4d2ecf445739f7a5068ea838391/FLAGda04cdca8 [2021-11-25 18:12:05,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/data/abd5bf278/1b7bb4d2ecf445739f7a5068ea838391 [2021-11-25 18:12:05,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:12:05,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:12:05,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:12:05,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:12:05,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:12:05,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a75904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05, skipping insertion in model container [2021-11-25 18:12:05,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:12:05,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:12:05,869 WARN L230 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-25 18:12:05,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:12:05,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:12:05,904 WARN L230 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_c7c89c48-d8d1-48de-825d-b3196aa283c5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-25 18:12:05,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:12:05,919 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:12:05,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05 WrapperNode [2021-11-25 18:12:05,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:12:05,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:12:05,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:12:05,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:12:05,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,956 INFO L137 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2021-11-25 18:12:05,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:12:05,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:12:05,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:12:05,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:12:05,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:05,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:12:05,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:12:05,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:12:05,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:12:05,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (1/1) ... [2021-11-25 18:12:06,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:12:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:06,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:12:06,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:12:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:12:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:12:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:12:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:12:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2021-11-25 18:12:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2021-11-25 18:12:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:12:06,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:12:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:12:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:12:06,213 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:12:06,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:12:06,391 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:12:06,399 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:12:06,403 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:12:06,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:06 BoogieIcfgContainer [2021-11-25 18:12:06,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:12:06,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:12:06,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:12:06,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:12:06,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:12:05" (1/3) ... [2021-11-25 18:12:06,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525c286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:06, skipping insertion in model container [2021-11-25 18:12:06,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:12:05" (2/3) ... [2021-11-25 18:12:06,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525c286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:12:06, skipping insertion in model container [2021-11-25 18:12:06,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:12:06" (3/3) ... [2021-11-25 18:12:06,418 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2021-11-25 18:12:06,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:12:06,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:12:06,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:12:06,482 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:12:06,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:12:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:12:06,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:06,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:06,511 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2021-11-25 18:12:06,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:06,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038266543] [2021-11-25 18:12:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:06,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:06,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:06,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:06,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:12:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:06,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:12:06,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:12:06,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:12:06,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:06,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038266543] [2021-11-25 18:12:06,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038266543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:06,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:12:06,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:12:06,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733789981] [2021-11-25 18:12:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:06,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:12:06,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:12:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:12:06,924 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:12:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:06,958 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2021-11-25 18:12:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:12:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-11-25 18:12:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:06,968 INFO L225 Difference]: With dead ends: 50 [2021-11-25 18:12:06,968 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 18:12:06,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:12:06,983 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:06,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:12:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 18:12:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-25 18:12:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-25 18:12:07,031 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2021-11-25 18:12:07,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:07,032 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-25 18:12:07,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:12:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-25 18:12:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 18:12:07,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:07,036 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:07,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:07,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:12:07,247 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2021-11-25 18:12:07,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834873380] [2021-11-25 18:12:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:07,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:07,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:07,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:12:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:12:07,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:12:07,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834873380] [2021-11-25 18:12:07,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834873380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:07,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [628856226] [2021-11-25 18:12:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:07,601 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:07,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:07,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:07,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-25 18:12:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:07,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:07,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:12:07,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:12:07,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [628856226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142468560] [2021-11-25 18:12:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:07,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:07,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:07,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:12:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:08,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:12:08,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 18:12:08,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:12:08,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142468560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:08,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 18:12:08,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 18:12:08,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601261597] [2021-11-25 18:12:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:08,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:12:08,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:12:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:12:08,074 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:12:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:08,091 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-25 18:12:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:12:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-25 18:12:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:08,093 INFO L225 Difference]: With dead ends: 42 [2021-11-25 18:12:08,093 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 18:12:08,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:12:08,096 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:08,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:12:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 18:12:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-25 18:12:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:08,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 18:12:08,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2021-11-25 18:12:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 18:12:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:12:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 18:12:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 18:12:08,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:08,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:08,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-25 18:12:08,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:08,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:08,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:12:08,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:08,718 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2021-11-25 18:12:08,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:08,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187272319] [2021-11-25 18:12:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:08,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:08,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:08,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:08,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:12:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:08,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:08,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:12:08,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:12:08,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187272319] [2021-11-25 18:12:08,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187272319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1262106073] [2021-11-25 18:12:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:08,951 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:08,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:08,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-25 18:12:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:09,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:09,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:12:09,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-25 18:12:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1262106073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204530255] [2021-11-25 18:12:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:09,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:09,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:09,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:09,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:12:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:09,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:12:09,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 18:12:09,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:12:09,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204530255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:12:09,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2021-11-25 18:12:09,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4, 4] total 7 [2021-11-25 18:12:09,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986181051] [2021-11-25 18:12:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:12:09,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:12:09,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:12:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:12:09,416 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:12:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:09,446 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-11-25 18:12:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:12:09,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-11-25 18:12:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:09,449 INFO L225 Difference]: With dead ends: 39 [2021-11-25 18:12:09,449 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 18:12:09,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:12:09,457 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:09,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:12:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 18:12:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-25 18:12:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-25 18:12:09,475 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2021-11-25 18:12:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:09,476 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-25 18:12:09,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 18:12:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-25 18:12:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 18:12:09,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:09,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:09,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:09,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-25 18:12:09,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:10,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:10,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2021-11-25 18:12:10,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:10,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253521547] [2021-11-25 18:12:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:10,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:10,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:10,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:12:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:10,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:10,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 18:12:10,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 18:12:10,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:10,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253521547] [2021-11-25 18:12:10,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253521547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:10,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [561612837] [2021-11-25 18:12:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:10,342 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:10,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:10,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-25 18:12:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:10,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:10,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 18:12:10,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 18:12:10,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [561612837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:10,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394974535] [2021-11-25 18:12:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:12:10,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:10,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:10,595 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:10,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:12:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:10,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:10,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 18:12:10,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-25 18:12:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394974535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:10,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:12:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2021-11-25 18:12:10,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068198995] [2021-11-25 18:12:10,868 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:12:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:12:10,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:12:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:12:10,870 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:12:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:11,018 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-11-25 18:12:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:12:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 38 [2021-11-25 18:12:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:11,020 INFO L225 Difference]: With dead ends: 57 [2021-11-25 18:12:11,020 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 18:12:11,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:12:11,021 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:11,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:12:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 18:12:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-25 18:12:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-25 18:12:11,034 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 38 [2021-11-25 18:12:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:11,035 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-25 18:12:11,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:12:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-25 18:12:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 18:12:11,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:11,038 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:11,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:11,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:11,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:11,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:12:11,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1097918215, now seen corresponding path program 2 times [2021-11-25 18:12:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155505117] [2021-11-25 18:12:11,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:12:11,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:11,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:11,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:11,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 18:12:11,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:12:11,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:11,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:12:11,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 18:12:11,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 18:12:12,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:12,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155505117] [2021-11-25 18:12:12,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155505117] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:12,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [540970852] [2021-11-25 18:12:12,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:12:12,082 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:12,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:12,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:12,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-25 18:12:12,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:12:12,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:12,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:12:12,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 18:12:12,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-25 18:12:12,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [540970852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:12,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909253646] [2021-11-25 18:12:12,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:12:12,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:12,432 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:12,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:12:12,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:12:12,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:12,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:12:12,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-25 18:12:12,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-25 18:12:12,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909253646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:12,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:12:12,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 4, 4] total 16 [2021-11-25 18:12:12,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578688595] [2021-11-25 18:12:12,764 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:12:12,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:12:12,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:12:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:12:12,766 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:12:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:13,112 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-11-25 18:12:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:12:13,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2021-11-25 18:12:13,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:13,120 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:12:13,121 INFO L226 Difference]: Without dead ends: 55 [2021-11-25 18:12:13,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:12:13,122 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:13,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 162 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:12:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-25 18:12:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-25 18:12:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-25 18:12:13,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 50 [2021-11-25 18:12:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:13,131 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-25 18:12:13,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:12:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-25 18:12:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-25 18:12:13,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:13,133 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:13,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:13,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-25 18:12:13,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:13,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:13,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1344928639, now seen corresponding path program 3 times [2021-11-25 18:12:13,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:13,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221398519] [2021-11-25 18:12:13,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:12:13,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:13,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:13,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 18:12:13,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:12:13,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:12:13,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:14,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:14,212 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221398519] [2021-11-25 18:12:14,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221398519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:14,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1338452234] [2021-11-25 18:12:14,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:12:14,213 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:14,219 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:14,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-25 18:12:14,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:12:14,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:14,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:12:14,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:14,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:14,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1338452234] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:14,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723461459] [2021-11-25 18:12:14,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:12:14,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:14,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:14,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:14,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:12:14,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:12:14,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:12:14,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:15,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:12:15,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723461459] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:15,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:12:15,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2021-11-25 18:12:15,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852354041] [2021-11-25 18:12:15,386 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:12:15,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:12:15,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:12:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:12:15,388 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:12:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:15,724 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-11-25 18:12:15,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:12:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 80 [2021-11-25 18:12:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:15,727 INFO L225 Difference]: With dead ends: 98 [2021-11-25 18:12:15,727 INFO L226 Difference]: Without dead ends: 67 [2021-11-25 18:12:15,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:12:15,729 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:15,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 176 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:12:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-25 18:12:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-25 18:12:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-25 18:12:15,738 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 80 [2021-11-25 18:12:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:15,738 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-25 18:12:15,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 18:12:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-25 18:12:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-25 18:12:15,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:15,741 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:15,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:15,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-25 18:12:16,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:16,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:12:16,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1960837619, now seen corresponding path program 4 times [2021-11-25 18:12:16,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:16,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738154338] [2021-11-25 18:12:16,357 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:12:16,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:16,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:16,358 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:16,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-25 18:12:16,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:12:16,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:16,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:12:16,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 18:12:16,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 18:12:17,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:17,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738154338] [2021-11-25 18:12:17,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738154338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:17,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [823875105] [2021-11-25 18:12:17,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:12:17,353 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:17,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:17,353 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:17,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-25 18:12:17,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:12:17,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:17,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:12:17,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 18:12:17,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2021-11-25 18:12:18,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [823875105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596267062] [2021-11-25 18:12:18,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:12:18,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:18,087 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:18,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 18:12:18,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:12:18,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:18,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:12:18,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 450 proven. 16 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-11-25 18:12:18,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2021-11-25 18:12:18,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596267062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:18,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:12:18,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 7, 7] total 34 [2021-11-25 18:12:18,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367636720] [2021-11-25 18:12:18,926 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:12:18,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 18:12:18,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:12:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 18:12:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:12:18,929 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:12:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:12:20,600 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2021-11-25 18:12:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-25 18:12:20,604 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2021-11-25 18:12:20,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:12:20,605 INFO L225 Difference]: With dead ends: 147 [2021-11-25 18:12:20,605 INFO L226 Difference]: Without dead ends: 103 [2021-11-25 18:12:20,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=499, Invalid=1757, Unknown=0, NotChecked=0, Total=2256 [2021-11-25 18:12:20,608 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:12:20,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 397 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 18:12:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-25 18:12:20,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-25 18:12:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 18:12:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-11-25 18:12:20,620 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 116 [2021-11-25 18:12:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:12:20,621 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-11-25 18:12:20,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 18:12:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-11-25 18:12:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 18:12:20,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:12:20,624 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 22, 22, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:12:20,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:20,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:21,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 18:12:21,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:21,228 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:12:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:12:21,228 INFO L85 PathProgramCache]: Analyzing trace with hash 975874879, now seen corresponding path program 5 times [2021-11-25 18:12:21,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:12:21,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611645487] [2021-11-25 18:12:21,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 18:12:21,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:12:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:12:21,230 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:12:21,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 18:12:22,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-11-25 18:12:22,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:22,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:12:22,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 671 proven. 100 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-25 18:12:22,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:12:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-25 18:12:23,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:12:23,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611645487] [2021-11-25 18:12:23,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611645487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:12:23,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [883096534] [2021-11-25 18:12:23,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 18:12:23,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:12:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:12:23,035 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:12:23,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-25 18:12:28,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:12:28,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105203346] [2021-11-25 18:12:28,816 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-25 18:12:28,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:28,818 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:28,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 1 [2021-11-25 18:12:28,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7c89c48-d8d1-48de-825d-b3196aa283c5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process