./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:44:43,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:44:43,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:44:43,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:44:43,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:44:43,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:44:43,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:44:43,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:44:43,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:44:43,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:44:43,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:44:43,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:44:43,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:44:43,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:44:43,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:44:43,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:44:43,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:44:43,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:44:43,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:44:43,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:44:43,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:44:43,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:44:43,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:44:43,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:44:43,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:44:43,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:44:43,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:44:43,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:44:43,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:44:43,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:44:43,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:44:43,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:44:43,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:44:43,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:44:43,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:44:43,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:44:43,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:44:43,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:44:43,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:44:43,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:44:43,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:44:43,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 13:44:43,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:44:43,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:44:43,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:44:43,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:44:43,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:44:43,990 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:44:43,991 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:44:43,991 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:44:43,991 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:44:43,991 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:44:43,991 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:44:43,992 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:44:43,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:44:43,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:44:43,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:44:43,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:44:43,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:44:43,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:44:43,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:43,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:44:43,995 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:44:43,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:44:43,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 [2022-12-14 13:44:44,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:44:44,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:44:44,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:44:44,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:44:44,217 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:44:44,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2022-12-14 13:44:46,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:44:46,940 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:44:46,941 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2022-12-14 13:44:46,948 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/data/24741d6b4/adc50e4ab25c44e6b1200a00154c2be8/FLAG7f950cbc2 [2022-12-14 13:44:47,295 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/data/24741d6b4/adc50e4ab25c44e6b1200a00154c2be8 [2022-12-14 13:44:47,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:44:47,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:44:47,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:47,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:44:47,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:44:47,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651e9c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47, skipping insertion in model container [2022-12-14 13:44:47,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:44:47,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:44:47,500 WARN L237 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_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i[24038,24051] [2022-12-14 13:44:47,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:47,507 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:44:47,536 WARN L237 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_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i[24038,24051] [2022-12-14 13:44:47,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:44:47,553 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:44:47,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47 WrapperNode [2022-12-14 13:44:47,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:44:47,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:47,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:44:47,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:44:47,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,583 INFO L138 Inliner]: procedures = 126, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 108 [2022-12-14 13:44:47,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:44:47,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:44:47,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:44:47,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:44:47,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:44:47,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:44:47,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:44:47,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:44:47,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (1/1) ... [2022-12-14 13:44:47,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:44:47,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:47,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:44:47,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:44:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 13:44:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:44:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:44:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:44:47,737 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:44:47,739 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:44:47,881 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:44:47,929 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:44:47,929 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 13:44:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:47 BoogieIcfgContainer [2022-12-14 13:44:47,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:44:47,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:44:47,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:44:47,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:44:47,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:44:47" (1/3) ... [2022-12-14 13:44:47,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2620cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:47, skipping insertion in model container [2022-12-14 13:44:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:44:47" (2/3) ... [2022-12-14 13:44:47,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2620cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:44:47, skipping insertion in model container [2022-12-14 13:44:47,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:47" (3/3) ... [2022-12-14 13:44:47,941 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2022-12-14 13:44:47,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:44:47,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 13:44:47,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:44:48,000 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51f78c0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:44:48,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 13:44:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.75) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 13:44:48,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:48,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 13:44:48,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 119290, now seen corresponding path program 1 times [2022-12-14 13:44:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:48,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281322350] [2022-12-14 13:44:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:48,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:48,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281322350] [2022-12-14 13:44:48,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281322350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:48,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:44:48,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:44:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76511022] [2022-12-14 13:44:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:44:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:44:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:44:48,228 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.75) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:48,262 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-12-14 13:44:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:44:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 13:44:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:48,269 INFO L225 Difference]: With dead ends: 45 [2022-12-14 13:44:48,270 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 13:44:48,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:44:48,274 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:48,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 13:44:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-12-14 13:44:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 13:44:48,296 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 3 [2022-12-14 13:44:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:48,297 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 13:44:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 13:44:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:44:48,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:48,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:44:48,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:44:48,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:48,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash 3617196, now seen corresponding path program 1 times [2022-12-14 13:44:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:48,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351729270] [2022-12-14 13:44:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:48,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:48,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:48,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351729270] [2022-12-14 13:44:48,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351729270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:48,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:44:48,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:44:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937698557] [2022-12-14 13:44:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:48,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:44:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:44:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:44:48,393 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:48,429 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-12-14 13:44:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:44:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 13:44:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:48,430 INFO L225 Difference]: With dead ends: 27 [2022-12-14 13:44:48,431 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 13:44:48,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:44:48,432 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:48,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 13:44:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 13:44:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-14 13:44:48,436 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2022-12-14 13:44:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:48,436 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-14 13:44:48,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-14 13:44:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 13:44:48,437 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:48,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:48,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:44:48,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:48,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 385761422, now seen corresponding path program 1 times [2022-12-14 13:44:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:48,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494310274] [2022-12-14 13:44:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:48,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494310274] [2022-12-14 13:44:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494310274] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872624684] [2022-12-14 13:44:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:48,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:48,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:48,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:44:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:48,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:44:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:44:48,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:44:48,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872624684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:48,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:44:48,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 13:44:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602573285] [2022-12-14 13:44:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:44:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:44:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:48,619 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:48,632 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-12-14 13:44:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:44:48,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 13:44:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:48,633 INFO L225 Difference]: With dead ends: 25 [2022-12-14 13:44:48,633 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 13:44:48,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:48,634 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:48,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 13:44:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 13:44:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 13:44:48,638 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2022-12-14 13:44:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:48,638 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 13:44:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 13:44:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:44:48,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:48,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:48,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:44:48,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:48,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:48,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash -926297740, now seen corresponding path program 1 times [2022-12-14 13:44:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:48,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766289346] [2022-12-14 13:44:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:49,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:49,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766289346] [2022-12-14 13:44:49,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766289346] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336799320] [2022-12-14 13:44:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:49,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:49,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:49,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:44:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:49,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 13:44:49,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:44:49,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:44:49,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336799320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:49,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:44:49,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-14 13:44:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122728867] [2022-12-14 13:44:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:44:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:44:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:49,099 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:49,113 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-12-14 13:44:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:44:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 13:44:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:49,114 INFO L225 Difference]: With dead ends: 24 [2022-12-14 13:44:49,114 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:44:49,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:44:49,115 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 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 [2022-12-14 13:44:49,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:44:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:44:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.368421052631579) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-14 13:44:49,120 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2022-12-14 13:44:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:49,120 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-14 13:44:49,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-14 13:44:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:44:49,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:49,121 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 13:44:49,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:44:49,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:49,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash -926378600, now seen corresponding path program 1 times [2022-12-14 13:44:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877628419] [2022-12-14 13:44:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:44:49,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:49,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877628419] [2022-12-14 13:44:49,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877628419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:49,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:44:49,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:44:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207491856] [2022-12-14 13:44:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:49,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:44:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:44:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:44:49,394 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:49,418 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-12-14 13:44:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:44:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 13:44:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:49,419 INFO L225 Difference]: With dead ends: 23 [2022-12-14 13:44:49,419 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 13:44:49,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:44:49,420 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:49,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 13:44:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 13:44:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 13:44:49,425 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2022-12-14 13:44:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:49,425 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 13:44:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 13:44:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:44:49,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:49,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2022-12-14 13:44:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:44:49,426 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:49,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:49,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1347034528, now seen corresponding path program 1 times [2022-12-14 13:44:49,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:49,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454284206] [2022-12-14 13:44:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:49,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454284206] [2022-12-14 13:44:49,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454284206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185019290] [2022-12-14 13:44:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:49,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:49,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:49,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:49,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:44:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:49,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 13:44:49,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:49,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:44:49,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185019290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:49,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:44:49,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 13:44:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389476806] [2022-12-14 13:44:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:49,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:44:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:44:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:44:49,644 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:49,681 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-12-14 13:44:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:44:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 13:44:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:49,682 INFO L225 Difference]: With dead ends: 22 [2022-12-14 13:44:49,682 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 13:44:49,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:44:49,683 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:49,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:44:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 13:44:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-12-14 13:44:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-12-14 13:44:49,686 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2022-12-14 13:44:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:49,686 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-12-14 13:44:49,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-12-14 13:44:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 13:44:49,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:49,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:49,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 13:44:49,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:44:49,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1006712187, now seen corresponding path program 1 times [2022-12-14 13:44:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:49,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562478534] [2022-12-14 13:44:49,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:50,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562478534] [2022-12-14 13:44:50,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562478534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:50,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479096448] [2022-12-14 13:44:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:50,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:50,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:44:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:50,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:44:50,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:50,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479096448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [377657228] [2022-12-14 13:44:50,183 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 13:44:50,183 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:50,187 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:50,192 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:50,192 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:50,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,273 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:44:50,274 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:50,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,290 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:50,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,340 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 13:44:50,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 13:44:50,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,379 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 13:44:50,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 13:44:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 13:44:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:44:50,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:44:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2022-12-14 13:44:50,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,600 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 13:44:50,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 13:44:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 13:44:50,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 13:44:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 13:44:50,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:50,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 13:44:50,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:50,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 13:44:51,097 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 13:44:51,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 13:44:51,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 13:44:51,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:51,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 44 [2022-12-14 13:44:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:51,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 13:44:51,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 13:44:51,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:51,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 13:44:51,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:44:51,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 49 [2022-12-14 13:44:51,537 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 13:44:51,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2022-12-14 13:44:51,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-14 13:44:51,557 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-12-14 13:44:51,719 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 13:44:51,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 13:44:51,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:51,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 13:44:51,792 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:53,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [377657228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:53,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:53,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 14 [2022-12-14 13:44:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594102852] [2022-12-14 13:44:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:53,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:44:53,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:44:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:44:53,687 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:53,825 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 13:44:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:44:53,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 13:44:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:53,826 INFO L225 Difference]: With dead ends: 28 [2022-12-14 13:44:53,826 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 13:44:53,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:44:53,827 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:53,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:44:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 13:44:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-12-14 13:44:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 13:44:53,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-12-14 13:44:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:53,830 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 13:44:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 13:44:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 13:44:53,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:53,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:53,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:44:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:44:54,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash 820382767, now seen corresponding path program 1 times [2022-12-14 13:44:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:54,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731135992] [2022-12-14 13:44:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:54,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731135992] [2022-12-14 13:44:54,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731135992] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573967612] [2022-12-14 13:44:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:54,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:54,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:54,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:44:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:54,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:44:54,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:54,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:44:54,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573967612] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1380726459] [2022-12-14 13:44:54,197 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:44:54,197 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:54,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:54,197 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:54,198 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,224 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:44:54,224 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:54,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,233 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,268 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 13:44:54,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 13:44:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,297 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 13:44:54,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 13:44:54,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:44:54,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:44:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 13:44:54,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:44:54,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:44:54,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,432 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 13:44:54,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2022-12-14 13:44:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,482 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 13:44:54,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 13:44:54,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 13:44:54,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 13:44:54,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:54,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 13:44:54,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:54,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 13:44:54,868 INFO L321 Elim1Store]: treesize reduction 248, result has 15.1 percent of original size [2022-12-14 13:44:54,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 471 [2022-12-14 13:44:54,918 INFO L321 Elim1Store]: treesize reduction 142, result has 10.7 percent of original size [2022-12-14 13:44:54,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 449 treesize of output 455 [2022-12-14 13:44:55,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,270 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 13:44:55,271 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 401 [2022-12-14 13:44:55,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,315 INFO L321 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2022-12-14 13:44:55,316 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 465 treesize of output 404 [2022-12-14 13:44:55,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,345 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 13:44:55,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 474 treesize of output 439 [2022-12-14 13:44:55,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,382 INFO L321 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2022-12-14 13:44:55,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 490 treesize of output 446 [2022-12-14 13:44:55,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:55,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,431 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 13:44:55,431 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 475 treesize of output 464 [2022-12-14 13:44:55,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:55,461 INFO L321 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2022-12-14 13:44:55,462 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 477 treesize of output 467 [2022-12-14 13:44:55,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:44:55,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 13:44:55,786 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:44:57,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1380726459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:44:57,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:44:57,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 14 [2022-12-14 13:44:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301902272] [2022-12-14 13:44:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:44:57,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:44:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:44:57,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:44:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:44:57,691 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:57,840 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-12-14 13:44:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 13:44:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 13:44:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:57,841 INFO L225 Difference]: With dead ends: 38 [2022-12-14 13:44:57,841 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 13:44:57,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 13:44:57,842 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:57,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 29 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:44:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 13:44:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-12-14 13:44:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-12-14 13:44:57,847 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2022-12-14 13:44:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:57,847 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-12-14 13:44:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:44:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-12-14 13:44:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:44:57,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:57,847 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:44:57,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:44:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:58,049 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1838092534, now seen corresponding path program 1 times [2022-12-14 13:44:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:58,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882221503] [2022-12-14 13:44:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:58,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:44:58,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:44:58,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882221503] [2022-12-14 13:44:58,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882221503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:44:58,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677359197] [2022-12-14 13:44:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:58,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:44:58,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:44:58,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:44:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:44:58,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:44:58,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:44:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:44:58,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:44:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:44:58,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677359197] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:44:58,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [279730118] [2022-12-14 13:44:58,222 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 13:44:58,223 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:44:58,223 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:44:58,223 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:44:58,223 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:44:58,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,240 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 13:44:58,240 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:58,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,260 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:44:58,260 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,299 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 13:44:58,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 13:44:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 13:44:58,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2022-12-14 13:44:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 13:44:58,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:44:58,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:44:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,441 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 13:44:58,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 13:44:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 13:44:58,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 13:44:58,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 13:44:58,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:58,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 13:44:58,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:58,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 13:44:58,804 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-12-14 13:44:58,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 449 treesize of output 455 [2022-12-14 13:44:58,894 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-12-14 13:44:58,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 463 [2022-12-14 13:44:59,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,229 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 13:44:59,229 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 462 treesize of output 427 [2022-12-14 13:44:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,294 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-12-14 13:44:59,294 INFO L350 Elim1Store]: Elim1 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 8 case distinctions, treesize of input 478 treesize of output 434 [2022-12-14 13:44:59,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,351 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 13:44:59,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 401 [2022-12-14 13:44:59,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:44:59,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,398 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 13:44:59,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 452 [2022-12-14 13:44:59,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,440 INFO L321 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2022-12-14 13:44:59,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 465 treesize of output 404 [2022-12-14 13:44:59,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:44:59,484 INFO L321 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2022-12-14 13:44:59,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 477 treesize of output 467 [2022-12-14 13:44:59,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-14 13:44:59,849 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-12-14 13:44:59,855 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:59,861 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:44:59,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 13:44:59,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:44:59,908 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:45:01,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [279730118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:45:01,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:45:01,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2022-12-14 13:45:01,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014564182] [2022-12-14 13:45:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:45:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:45:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:45:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:45:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:45:01,075 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:45:01,555 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-12-14 13:45:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:45:01,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 13:45:01,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:45:01,556 INFO L225 Difference]: With dead ends: 33 [2022-12-14 13:45:01,556 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 13:45:01,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-12-14 13:45:01,556 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:45:01,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 30 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:45:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 13:45:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-12-14 13:45:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-12-14 13:45:01,561 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2022-12-14 13:45:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:45:01,561 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-12-14 13:45:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-12-14 13:45:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:45:01,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:45:01,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:45:01,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:45:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:45:01,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:45:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:45:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1504306799, now seen corresponding path program 1 times [2022-12-14 13:45:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:45:01,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564757368] [2022-12-14 13:45:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:45:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:45:01,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:45:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564757368] [2022-12-14 13:45:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564757368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:45:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697517827] [2022-12-14 13:45:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:45:01,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:45:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:45:01,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:45:01,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:45:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:45:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:45:01,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:45:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:45:01,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:45:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 13:45:01,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697517827] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:45:01,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [465224736] [2022-12-14 13:45:01,951 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 13:45:01,952 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:45:01,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:45:01,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:45:01,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:45:01,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:01,977 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 13:45:01,977 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:45:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:01,987 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 13:45:02,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,018 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 13:45:02,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 13:45:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,053 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 13:45:02,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 13:45:02,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:45:02,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:45:02,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-12-14 13:45:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 13:45:02,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 13:45:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,171 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-12-14 13:45:02,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 46 [2022-12-14 13:45:02,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,219 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 13:45:02,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 13:45:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 38 [2022-12-14 13:45:02,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 27 [2022-12-14 13:45:02,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2022-12-14 13:45:02,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2022-12-14 13:45:02,582 INFO L321 Elim1Store]: treesize reduction 248, result has 15.1 percent of original size [2022-12-14 13:45:02,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 471 [2022-12-14 13:45:02,625 INFO L321 Elim1Store]: treesize reduction 142, result has 10.7 percent of original size [2022-12-14 13:45:02,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 449 treesize of output 455 [2022-12-14 13:45:02,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,937 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 13:45:02,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 434 treesize of output 415 [2022-12-14 13:45:02,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:02,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:02,984 INFO L321 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2022-12-14 13:45:02,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 450 treesize of output 422 [2022-12-14 13:45:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,032 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-14 13:45:03,033 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 435 treesize of output 373 [2022-12-14 13:45:03,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,070 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-12-14 13:45:03,071 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 435 treesize of output 424 [2022-12-14 13:45:03,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,101 INFO L321 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2022-12-14 13:45:03,101 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 437 treesize of output 376 [2022-12-14 13:45:03,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,134 INFO L321 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2022-12-14 13:45:03,135 INFO L350 Elim1Store]: Elim1 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 5 case distinctions, treesize of input 449 treesize of output 439 [2022-12-14 13:45:03,426 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-12-14 13:45:03,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:45:03,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 49 [2022-12-14 13:45:03,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-14 13:45:03,458 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-12-14 13:45:03,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2022-12-14 13:45:03,511 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-12-14 13:45:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:45:03,522 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:45:03,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 61 [2022-12-14 13:45:03,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:45:03,538 INFO L321 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2022-12-14 13:45:03,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2022-12-14 13:45:03,552 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 13:45:03,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 13:45:03,605 INFO L321 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2022-12-14 13:45:03,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 46 [2022-12-14 13:45:03,625 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-12-14 13:45:03,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-12-14 13:45:03,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-14 13:45:03,649 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-12-14 13:45:03,739 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 1 [2022-12-14 13:45:03,757 INFO L321 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2022-12-14 13:45:03,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 46 [2022-12-14 13:45:03,779 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-12-14 13:45:03,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 41 [2022-12-14 13:45:03,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-12-14 13:45:03,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 13:45:03,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-12-14 13:45:03,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:45:04,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [465224736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:45:04,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:45:04,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2022-12-14 13:45:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830249855] [2022-12-14 13:45:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:45:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:45:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:45:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:45:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:45:04,964 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:45:05,681 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 13:45:05,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 13:45:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 13:45:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:45:05,682 INFO L225 Difference]: With dead ends: 28 [2022-12-14 13:45:05,682 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 13:45:05,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-12-14 13:45:05,683 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:45:05,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:45:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 13:45:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 13:45:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 13:45:05,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-12-14 13:45:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:45:05,684 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 13:45:05,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:45:05,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 13:45:05,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 13:45:05,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-14 13:45:05,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-14 13:45:05,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-14 13:45:05,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-14 13:45:05,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-14 13:45:05,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-14 13:45:05,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 13:45:05,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:45:05,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 13:45:06,661 INFO L895 garLoopResultBuilder]: At program point L576(lines 576 578) the Hoare annotation is: (and (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (let ((.cse14 (select |#memory_int| 1))) (let ((.cse0 (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|)) (.cse1 (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1)) (.cse2 (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1)) (.cse3 (= 8 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= (select .cse14 0) 48)) (.cse9 (= 27 (select |#length| 2))) (.cse10 (= (select |#length| |ULTIMATE.start_main_~#s~0#1.base|) 4)) (.cse11 (= (select .cse14 1) 0)) (.cse12 (< 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_sll_create_~len#1| |ULTIMATE.start_sll_create_#in~len#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (let ((.cse13 (+ 4 |ULTIMATE.start_sll_create_~new_head~0#1.offset|))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_sll_create_~data#1| (select (select |#memory_int| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 0)) .cse4 (not (= |ULTIMATE.start_node_create_~temp~0#1.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|)) (= |ULTIMATE.start_sll_create_~head~0#1.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|) (= (select |#length| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 8) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_~new_head~0#1.base|) .cse13) 0) .cse5 .cse6 .cse7 .cse8 .cse9 (= (select |#valid| |ULTIMATE.start_sll_create_~new_head~0#1.base|) 1) .cse10 .cse11 (< |ULTIMATE.start_sll_create_~new_head~0#1.base| |#StackHeapBarrier|) .cse12 (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_create_~new_head~0#1.base|) .cse13) 0)))))) (or (and (<= 0 |ULTIMATE.start_sll_create_~head~0#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.base| 0)) (and (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_~len#1| 1))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (< 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0)) [2022-12-14 13:45:06,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,661 INFO L902 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2022-12-14 13:45:06,661 INFO L899 garLoopResultBuilder]: For program point L593(lines 593 605) no Hoare annotation was computed. [2022-12-14 13:45:06,661 INFO L899 garLoopResultBuilder]: For program point L585-3(line 585) no Hoare annotation was computed. [2022-12-14 13:45:06,661 INFO L899 garLoopResultBuilder]: For program point L585-4(line 585) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L895 garLoopResultBuilder]: At program point L585-5(lines 585 589) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse1 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse2 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse3 (<= |#NULL.offset| 0)) (.cse4 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse5 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse6 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse7 (<= |ULTIMATE.start_main_~#s~0#1.offset| 0)) (.cse8 (<= 0 |ULTIMATE.start_main_~#s~0#1.base|)) (.cse9 (<= 0 |#NULL.offset|)) (.cse10 (<= 0 |#StackHeapBarrier|)) (.cse11 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse12 (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse13 (let ((.cse15 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse16 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse17 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse15 .cse16 .cse17) (and (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse15 .cse16 .cse17)))) (.cse14 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|))) (or (and (= 2 |ULTIMATE.start_sll_create_~len#1|) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= |ULTIMATE.start_sll_create_~len#1| 1) .cse6 (<= 0 |ULTIMATE.start_sll_create_~len#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14))) [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L599-1(lines 599 602) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L895 garLoopResultBuilder]: At program point L599-3(lines 599 602) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= 0 |ULTIMATE.start_sll_remove_last_~head#1.offset|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_remove_last_~head#1.base|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_remove_last_~head#1.offset| 0) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_sll_remove_last_#in~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (let ((.cse0 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse0 .cse1) (and (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse0 .cse1))) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_sll_remove_last_#in~head#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_sll_remove_last_#in~head#1.base|)) [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L599-4(lines 599 602) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L612(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L612-1(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L612-5(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L899 garLoopResultBuilder]: For program point L612-6(line 612) no Hoare annotation was computed. [2022-12-14 13:45:06,662 INFO L895 garLoopResultBuilder]: At program point L612-7(lines 612 614) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (let ((.cse0 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and (= |ULTIMATE.start_sll_create_~head~0#1.base| 0) .cse0 .cse1) (and (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse0 .cse1))) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~i~0#1| 1) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0)) [2022-12-14 13:45:06,663 INFO L899 garLoopResultBuilder]: For program point L592(lines 592 606) no Hoare annotation was computed. [2022-12-14 13:45:06,665 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:45:06,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:45:06,682 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 13:45:06,683 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 13:45:06,685 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 13:45:06,685 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 13:45:06,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:45:06 BoogieIcfgContainer [2022-12-14 13:45:06,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:45:06,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:45:06,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:45:06,689 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:45:06,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:44:47" (3/4) ... [2022-12-14 13:45:06,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 13:45:06,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-14 13:45:06,701 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 13:45:06,701 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 13:45:06,701 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 13:45:06,718 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data <= 1) && \old(len) <= 2) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && ((((temp == 0 && data == 1) && len == 2) && #NULL == 0) || (((head == 0 && data == 1) && len == 2) && #NULL == 0))) && 0 <= head) || ((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data <= 1) && len <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && ((((temp == 0 && data == 1) && len == 2) && #NULL == 0) || (((head == 0 && data == 1) && len == 2) && #NULL == 0))) && 0 <= head) [2022-12-14 13:45:06,718 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((data == \old(data) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= data) && ((((((((((((((unknown-#StackHeapBarrier-unknown < s && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && len == \old(len)) && 2 == unknown-#length-unknown[1]) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && data == unknown-#memory_int-unknown[new_head][0]) && 2 == unknown-#length-unknown[1]) && !(temp == new_head)) && head == new_head) && unknown-#length-unknown[new_head] == 8) && #memory_$Pointer$[new_head][4 + new_head] == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && \valid[new_head] == 1) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && new_head < unknown-#StackHeapBarrier-unknown) && 0 < unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[new_head][4 + new_head] == 0))) && ((0 <= head && head <= 0) || ((0 <= new_head && new_head <= 0) && len <= 1))) && data == 1) && data <= 1) && \old(len) <= 2) && 0 < len) && len == 2) && s <= 0) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 [2022-12-14 13:45:06,718 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && len <= 0) && \result <= 0) && #NULL <= 0) && 1 <= data) && (((head == 0 && data == 1) && len == 2) || ((temp == 0 && data == 1) && len == 2))) && data <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && 0 <= s) && 0 <= \result) && 0 <= #NULL) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 [2022-12-14 13:45:06,719 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((1 <= \old(data) && 0 <= head) && \old(data) <= 1) && head <= 0) && 0 <= head) && len <= 0) && \result <= 0) && head <= 0) && #NULL <= 0) && 0 <= head) && 1 <= data) && (((head == 0 && data == 1) && len == 2) || ((temp == 0 && data == 1) && len == 2))) && 0 <= i) && data <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && head <= 0) && 0 <= s) && 0 <= \result) && 0 <= #NULL) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) && 0 <= head [2022-12-14 13:45:06,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:45:06,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:45:06,729 INFO L158 Benchmark]: Toolchain (without parser) took 19431.27ms. Allocated memory was 144.7MB in the beginning and 190.8MB in the end (delta: 46.1MB). Free memory was 109.5MB in the beginning and 92.3MB in the end (delta: 17.2MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,729 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:45:06,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.38ms. Allocated memory is still 144.7MB. Free memory was 109.5MB in the beginning and 92.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.03ms. Allocated memory is still 144.7MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,730 INFO L158 Benchmark]: Boogie Preprocessor took 18.44ms. Allocated memory is still 144.7MB. Free memory was 90.5MB in the beginning and 88.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,730 INFO L158 Benchmark]: RCFGBuilder took 330.10ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 70.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,730 INFO L158 Benchmark]: TraceAbstraction took 18752.93ms. Allocated memory was 144.7MB in the beginning and 190.8MB in the end (delta: 46.1MB). Free memory was 70.0MB in the beginning and 95.5MB in the end (delta: -25.5MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,730 INFO L158 Benchmark]: Witness Printer took 39.39ms. Allocated memory is still 190.8MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:45:06,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 144.7MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.38ms. Allocated memory is still 144.7MB. Free memory was 109.5MB in the beginning and 92.6MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.03ms. Allocated memory is still 144.7MB. Free memory was 92.6MB in the beginning and 90.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.44ms. Allocated memory is still 144.7MB. Free memory was 90.5MB in the beginning and 88.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.10ms. Allocated memory is still 144.7MB. Free memory was 88.8MB in the beginning and 70.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18752.93ms. Allocated memory was 144.7MB in the beginning and 190.8MB in the end (delta: 46.1MB). Free memory was 70.0MB in the beginning and 95.5MB in the end (delta: -25.5MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. * Witness Printer took 39.39ms. Allocated memory is still 190.8MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * 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 - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 18.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 270 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 110 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 140 SyntacticMatches, 19 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 593 HoareAnnotationTreeSize, 5 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 2051 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1211 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 27/45 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: OVERALL_TIME: 6.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 52, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 107, TOOLS_POST_TIME: 6.4s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 107, TOOLS_QUANTIFIERELIM_TIME: 6.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 192, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 12, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 52, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 4.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 4.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 12, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 885, DAG_COMPRESSION_RETAINED_NODES: 170, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data <= 1) && \old(len) <= 2) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && ((((temp == 0 && data == 1) && len == 2) && #NULL == 0) || (((head == 0 && data == 1) && len == 2) && #NULL == 0))) && 0 <= head) || ((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && #NULL <= 0) && 1 <= data) && data <= 1) && len <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && 0 <= s) && 0 <= #NULL) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && ((((temp == 0 && data == 1) && len == 2) && #NULL == 0) || (((head == 0 && data == 1) && len == 2) && #NULL == 0))) && 0 <= head) - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((1 <= \old(data) && 0 <= head) && \old(data) <= 1) && head <= 0) && 0 <= head) && len <= 0) && \result <= 0) && head <= 0) && #NULL <= 0) && 0 <= head) && 1 <= data) && (((head == 0 && data == 1) && len == 2) || ((temp == 0 && data == 1) && len == 2))) && 0 <= i) && data <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && head <= 0) && 0 <= s) && 0 <= \result) && 0 <= #NULL) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0) && 0 <= head - InvariantResult [Line: 576]: Loop Invariant [2022-12-14 13:45:06,741 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 13:45:06,742 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-12-14 13:45:06,743 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-12-14 13:45:06,744 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((((((((((((((data == \old(data) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= data) && ((((((((((((((unknown-#StackHeapBarrier-unknown < s && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && len == \old(len)) && 2 == unknown-#length-unknown[1]) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((((unknown-#StackHeapBarrier-unknown < s && \valid[temp] == 1) && \valid[s] == 1) && 8 == unknown-#length-unknown[temp]) && data == unknown-#memory_int-unknown[new_head][0]) && 2 == unknown-#length-unknown[1]) && !(temp == new_head)) && head == new_head) && unknown-#length-unknown[new_head] == 8) && #memory_$Pointer$[new_head][4 + new_head] == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 27 == unknown-#length-unknown[2]) && \valid[new_head] == 1) && unknown-#length-unknown[s] == 4) && unknown-#memory_int-unknown[1][1] == 0) && new_head < unknown-#StackHeapBarrier-unknown) && 0 < unknown-#StackHeapBarrier-unknown) && #memory_$Pointer$[new_head][4 + new_head] == 0))) && ((0 <= head && head <= 0) || ((0 <= new_head && new_head <= 0) && len <= 1))) && data == 1) && data <= 1) && \old(len) <= 2) && 0 < len) && len == 2) && s <= 0) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 612]: Loop Invariant Derived loop invariant: (((((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && len <= 0) && \result <= 0) && #NULL <= 0) && 1 <= data) && (((head == 0 && data == 1) && len == 2) || ((temp == 0 && data == 1) && len == 2))) && data <= 1) && \old(len) <= 2) && 0 <= len) && s <= 0) && 0 <= s) && 0 <= \result) && 0 <= #NULL) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= s) && 0 <= head) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-12-14 13:45:06,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5bf9-ddc5-4930-bfb0-6180747e13cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE