./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 b5237d83 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_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/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_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 01:59:06,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:06,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:06,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:06,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:06,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:06,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:06,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:06,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:06,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:06,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:06,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:06,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:06,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:06,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:06,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:06,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:06,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:06,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:06,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:06,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:06,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:06,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:06,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:06,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:06,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:06,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:06,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:06,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:06,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:06,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:06,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:06,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:06,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:06,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:06,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:06,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:06,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:06,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:06,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:06,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:06,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:59:06,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:06,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:06,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:06,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:06,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:06,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:06,604 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:06,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:06,605 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:06,605 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:06,605 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:06,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:06,606 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:06,606 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:06,606 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:06,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:06,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:06,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:06,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:06,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:06,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:06,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:06,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:06,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:06,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:06,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:06,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:06,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:06,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:06,611 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:06,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:06,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:06,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:06,612 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_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 [2022-11-22 01:59:06,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:06,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:06,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:06,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:06,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:06,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2022-11-22 01:59:10,208 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:59:10,490 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:59:10,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2022-11-22 01:59:10,504 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/data/8f23f26d4/34171264de63437a8e1e4d7a95edea2d/FLAGd0b20edff [2022-11-22 01:59:10,520 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/data/8f23f26d4/34171264de63437a8e1e4d7a95edea2d [2022-11-22 01:59:10,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:59:10,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:59:10,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:10,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:59:10,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:59:10,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:10,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48aa59ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10, skipping insertion in model container [2022-11-22 01:59:10,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:10,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:59:10,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:59:10,872 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_a94280ba-98ff-4eb3-9d85-d28b8359916e/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i[24038,24051] [2022-11-22 01:59:10,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:10,884 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:59:10,950 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_a94280ba-98ff-4eb3-9d85-d28b8359916e/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i[24038,24051] [2022-11-22 01:59:10,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:10,976 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:59:10,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10 WrapperNode [2022-11-22 01:59:10,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:10,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:10,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:59:10,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:59:10,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,056 INFO L138 Inliner]: procedures = 126, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 108 [2022-11-22 01:59:11,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:11,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:59:11,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:59:11,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:59:11,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:59:11,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:59:11,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:59:11,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:59:11,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (1/1) ... [2022-11-22 01:59:11,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:11,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:11,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:59:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:59:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:59:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:59:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:59:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:59:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:59:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:59:11,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:59:11,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:59:11,545 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:11,626 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:11,626 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:59:11,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:11 BoogieIcfgContainer [2022-11-22 01:59:11,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:11,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:11,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:11,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:11,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:59:10" (1/3) ... [2022-11-22 01:59:11,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b4e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:11, skipping insertion in model container [2022-11-22 01:59:11,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:10" (2/3) ... [2022-11-22 01:59:11,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b4e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:11, skipping insertion in model container [2022-11-22 01:59:11,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:11" (3/3) ... [2022-11-22 01:59:11,665 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2022-11-22 01:59:11,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:11,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 01:59:11,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:11,817 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;@7c8048c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:11,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 01:59:11,823 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) [2022-11-22 01:59:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:59:11,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:11,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:59:11,836 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)] === [2022-11-22 01:59:11,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 121212, now seen corresponding path program 1 times [2022-11-22 01:59:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958736343] [2022-11-22 01:59:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:12,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958736343] [2022-11-22 01:59:12,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958736343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:12,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:12,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:59:12,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088906231] [2022-11-22 01:59:12,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:12,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:12,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:12,240 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) [2022-11-22 01:59:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:12,327 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-22 01:59:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:12,330 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 [2022-11-22 01:59:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:12,339 INFO L225 Difference]: With dead ends: 45 [2022-11-22 01:59:12,339 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 01:59:12,342 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 [2022-11-22 01:59:12,349 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:12,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 01:59:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-22 01:59:12,393 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) [2022-11-22 01:59:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-22 01:59:12,403 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 3 [2022-11-22 01:59:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:12,404 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-22 01:59:12,405 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) [2022-11-22 01:59:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-22 01:59:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:59:12,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:12,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:59:12,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:12,407 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)] === [2022-11-22 01:59:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 3676809, now seen corresponding path program 1 times [2022-11-22 01:59:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899713132] [2022-11-22 01:59:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:12,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:12,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899713132] [2022-11-22 01:59:12,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899713132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:12,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:12,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:59:12,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573513454] [2022-11-22 01:59:12,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:12,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:59:12,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:59:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:59:12,620 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) [2022-11-22 01:59:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:12,666 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-22 01:59:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:59:12,667 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 [2022-11-22 01:59:12,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:12,668 INFO L225 Difference]: With dead ends: 27 [2022-11-22 01:59:12,668 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 01:59:12,668 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 [2022-11-22 01:59:12,670 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 [2022-11-22 01:59:12,671 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] [2022-11-22 01:59:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 01:59:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-22 01:59:12,675 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) [2022-11-22 01:59:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-22 01:59:12,676 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2022-11-22 01:59:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:12,676 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-22 01:59:12,677 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) [2022-11-22 01:59:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-22 01:59:12,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:59:12,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:12,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:12,678 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)] === [2022-11-22 01:59:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2133274991, now seen corresponding path program 1 times [2022-11-22 01:59:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025039831] [2022-11-22 01:59:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:12,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:12,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025039831] [2022-11-22 01:59:12,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025039831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:12,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572273255] [2022-11-22 01:59:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:12,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:12,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:12,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:59:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:12,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:59:12,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:59:13,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:59:13,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572273255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:13,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:59:13,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-22 01:59:13,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137192157] [2022-11-22 01:59:13,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:13,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:59:13,018 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) [2022-11-22 01:59:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:13,033 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-11-22 01:59:13,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:13,034 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 [2022-11-22 01:59:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:13,034 INFO L225 Difference]: With dead ends: 25 [2022-11-22 01:59:13,035 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 01:59:13,035 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 [2022-11-22 01:59:13,036 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 [2022-11-22 01:59:13,037 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] [2022-11-22 01:59:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 01:59:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 01:59:13,041 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) [2022-11-22 01:59:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 01:59:13,042 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2022-11-22 01:59:13,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:13,042 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 01:59:13,043 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) [2022-11-22 01:59:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 01:59:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:59:13,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:13,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:13,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:59:13,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:13,249 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)] === [2022-11-22 01:59:13,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1707015215, now seen corresponding path program 1 times [2022-11-22 01:59:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:13,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795299245] [2022-11-22 01:59:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:13,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:13,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795299245] [2022-11-22 01:59:13,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795299245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:13,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170125156] [2022-11-22 01:59:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:13,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:13,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:13,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:13,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:59:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:59:13,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:59:13,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:59:13,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170125156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:13,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:59:13,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-22 01:59:13,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615395822] [2022-11-22 01:59:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:13,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:59:13,594 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) [2022-11-22 01:59:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:13,616 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-11-22 01:59:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:13,617 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 [2022-11-22 01:59:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:13,621 INFO L225 Difference]: With dead ends: 24 [2022-11-22 01:59:13,621 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 01:59:13,622 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 [2022-11-22 01:59:13,624 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 [2022-11-22 01:59:13,626 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] [2022-11-22 01:59:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 01:59:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-22 01:59:13,635 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) [2022-11-22 01:59:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-22 01:59:13,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2022-11-22 01:59:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:13,637 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-22 01:59:13,637 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) [2022-11-22 01:59:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-22 01:59:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:59:13,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:13,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-22 01:59:13,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:59:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:13,847 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)] === [2022-11-22 01:59:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1707096044, now seen corresponding path program 1 times [2022-11-22 01:59:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:13,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480887641] [2022-11-22 01:59:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:14,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480887641] [2022-11-22 01:59:14,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480887641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:14,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991477853] [2022-11-22 01:59:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:14,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:14,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:59:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:59:14,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:59:14,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991477853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:14,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:59:14,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-22 01:59:14,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772643670] [2022-11-22 01:59:14,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:14,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:59:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:59:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:59:14,225 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-22 01:59:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:14,290 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-22 01:59:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:59:14,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2022-11-22 01:59:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:14,292 INFO L225 Difference]: With dead ends: 23 [2022-11-22 01:59:14,292 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 01:59:14,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:59:14,293 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:14,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 26 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:59:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 01:59:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-22 01:59:14,298 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) [2022-11-22 01:59:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-22 01:59:14,298 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2022-11-22 01:59:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:14,299 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-22 01:59:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2022-11-22 01:59:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-22 01:59:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:59:14,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:14,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2022-11-22 01:59:14,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:59:14,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:14,506 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)] === [2022-11-22 01:59:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1380369756, now seen corresponding path program 1 times [2022-11-22 01:59:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:14,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307265596] [2022-11-22 01:59:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:59:14,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:14,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307265596] [2022-11-22 01:59:14,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307265596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:14,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:14,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42586877] [2022-11-22 01:59:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:59:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:59:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:59:14,568 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-11-22 01:59:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:14,594 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-22 01:59:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:59:14,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 [2022-11-22 01:59:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:14,595 INFO L225 Difference]: With dead ends: 22 [2022-11-22 01:59:14,595 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 01:59:14,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:59:14,596 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:14,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:59:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 01:59:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-11-22 01:59:14,600 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) [2022-11-22 01:59:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-22 01:59:14,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2022-11-22 01:59:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:14,601 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-22 01:59:14,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-11-22 01:59:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-22 01:59:14,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:59:14,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:14,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:59:14,603 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)] === [2022-11-22 01:59:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:14,603 INFO L85 PathProgramCache]: Analyzing trace with hash -945060223, now seen corresponding path program 1 times [2022-11-22 01:59:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:14,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985640012] [2022-11-22 01:59:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:14,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985640012] [2022-11-22 01:59:14,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985640012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:14,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715985337] [2022-11-22 01:59:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:14,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:14,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:14,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:14,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:59:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:14,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:59:14,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:59:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:14,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715985337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:59:14,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1158244777] [2022-11-22 01:59:14,918 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:59:14,919 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:59:14,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:59:14,928 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:59:14,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:59:15,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,061 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:59:15,062 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 [2022-11-22 01:59:15,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,086 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 [2022-11-22 01:59:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,172 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-22 01:59:15,173 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 [2022-11-22 01:59:15,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,242 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 01:59:15,242 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 [2022-11-22 01:59:15,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,329 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 [2022-11-22 01:59:15,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,372 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 [2022-11-22 01:59:15,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,408 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 [2022-11-22 01:59:15,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,422 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 [2022-11-22 01:59:15,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,575 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:59:15,575 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 [2022-11-22 01:59:15,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,606 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 [2022-11-22 01:59:15,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,703 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 [2022-11-22 01:59:15,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,764 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 [2022-11-22 01:59:15,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:15,792 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 [2022-11-22 01:59:15,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:15,807 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 [2022-11-22 01:59:16,370 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-11-22 01:59:16,370 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 [2022-11-22 01:59:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,429 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 [2022-11-22 01:59:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:16,563 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 [2022-11-22 01:59:16,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:16,611 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 [2022-11-22 01:59:16,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:16,646 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 [2022-11-22 01:59:16,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:16,665 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 [2022-11-22 01:59:17,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:17,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:59:17,112 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 [2022-11-22 01:59:17,140 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-22 01:59:17,140 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 [2022-11-22 01:59:17,154 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 [2022-11-22 01:59:17,166 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 [2022-11-22 01:59:17,424 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-11-22 01:59:17,424 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 [2022-11-22 01:59:17,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:17,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:17,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:17,478 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 [2022-11-22 01:59:17,542 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:59:20,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1158244777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:59:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 14 [2022-11-22 01:59:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137060852] [2022-11-22 01:59:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:59:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:59:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:59:20,943 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) [2022-11-22 01:59:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:21,213 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-11-22 01:59:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:59:21,214 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 [2022-11-22 01:59:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:21,214 INFO L225 Difference]: With dead ends: 28 [2022-11-22 01:59:21,214 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:59:21,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:59:21,215 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:21,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 18 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:59:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:59:21,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-22 01:59:21,221 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) [2022-11-22 01:59:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-22 01:59:21,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-22 01:59:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:21,222 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-22 01:59:21,222 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) [2022-11-22 01:59:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-22 01:59:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:59:21,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:21,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:21,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:59:21,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:59:21,428 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)] === [2022-11-22 01:59:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash -752883887, now seen corresponding path program 1 times [2022-11-22 01:59:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:21,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073363234] [2022-11-22 01:59:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:21,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:21,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073363234] [2022-11-22 01:59:21,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073363234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:21,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457108285] [2022-11-22 01:59:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:21,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:21,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:21,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:59:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:59:21,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:21,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:59:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:59:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457108285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:59:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2027734703] [2022-11-22 01:59:21,703 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 01:59:21,704 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:59:21,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:59:21,704 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:59:21,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:59:21,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,739 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:59:21,739 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 [2022-11-22 01:59:21,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,751 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 [2022-11-22 01:59:21,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,804 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-22 01:59:21,804 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 [2022-11-22 01:59:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,863 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 01:59:21,864 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 [2022-11-22 01:59:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:21,922 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 [2022-11-22 01:59:21,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:21,945 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 [2022-11-22 01:59:21,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:21,968 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 [2022-11-22 01:59:21,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:21,980 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 [2022-11-22 01:59:22,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,083 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-22 01:59:22,084 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 [2022-11-22 01:59:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,166 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:59:22,167 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 [2022-11-22 01:59:22,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:22,259 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 [2022-11-22 01:59:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:22,306 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 [2022-11-22 01:59:22,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,330 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 [2022-11-22 01:59:22,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:22,343 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 [2022-11-22 01:59:22,829 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-11-22 01:59:22,829 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 [2022-11-22 01:59:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:22,897 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 [2022-11-22 01:59:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:23,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:23,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:23,005 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 [2022-11-22 01:59:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:23,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:23,081 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 [2022-11-22 01:59:23,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:23,106 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 [2022-11-22 01:59:23,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:23,120 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 [2022-11-22 01:59:23,501 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 [2022-11-22 01:59:23,510 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 [2022-11-22 01:59:23,514 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:59:26,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2027734703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:26,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:59:26,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 14 [2022-11-22 01:59:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42501819] [2022-11-22 01:59:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:59:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:59:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:59:26,084 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) [2022-11-22 01:59:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:26,217 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-22 01:59:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:59:26,218 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 [2022-11-22 01:59:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:26,218 INFO L225 Difference]: With dead ends: 38 [2022-11-22 01:59:26,218 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 01:59:26,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:59:26,219 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:26,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 21 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:59:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 01:59:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2022-11-22 01:59:26,225 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) [2022-11-22 01:59:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-22 01:59:26,226 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2022-11-22 01:59:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:26,226 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-22 01:59:26,226 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) [2022-11-22 01:59:26,227 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-22 01:59:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:59:26,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:26,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:26,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:59:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:26,432 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)] === [2022-11-22 01:59:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1918888596, now seen corresponding path program 1 times [2022-11-22 01:59:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:26,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985530948] [2022-11-22 01:59:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:59:26,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:26,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985530948] [2022-11-22 01:59:26,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985530948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:26,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039788927] [2022-11-22 01:59:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:26,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:26,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:26,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:26,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:59:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:26,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:59:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:59:26,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:59:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:59:26,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039788927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:59:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878143014] [2022-11-22 01:59:26,726 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 01:59:26,726 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:59:26,727 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:59:26,727 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:59:26,727 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:59:26,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,764 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:59:26,764 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 [2022-11-22 01:59:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,788 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:59:26,789 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 [2022-11-22 01:59:26,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,867 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 01:59:26,868 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 [2022-11-22 01:59:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,885 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 [2022-11-22 01:59:26,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,933 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 [2022-11-22 01:59:26,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:26,944 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 [2022-11-22 01:59:26,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:26,971 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 [2022-11-22 01:59:26,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:26,991 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 [2022-11-22 01:59:27,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:27,005 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 [2022-11-22 01:59:27,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,115 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:59:27,116 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 [2022-11-22 01:59:27,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,155 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 [2022-11-22 01:59:27,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:27,229 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 [2022-11-22 01:59:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:27,265 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 47 treesize of output 27 [2022-11-22 01:59:27,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:27,287 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 [2022-11-22 01:59:27,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:27,299 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 [2022-11-22 01:59:27,672 INFO L321 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2022-11-22 01:59:27,673 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 [2022-11-22 01:59:27,799 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-11-22 01:59:27,800 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 [2022-11-22 01:59:28,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,233 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-22 01:59:28,233 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 [2022-11-22 01:59:28,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,321 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 01:59:28,321 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 [2022-11-22 01:59:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,393 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-11-22 01:59:28,394 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 [2022-11-22 01:59:28,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,450 INFO L321 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2022-11-22 01:59:28,450 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 [2022-11-22 01:59:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:28,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,514 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-11-22 01:59:28,514 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 475 treesize of output 464 [2022-11-22 01:59:28,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:28,564 INFO L321 Elim1Store]: treesize reduction 88, result has 20.7 percent of original size [2022-11-22 01:59:28,565 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 [2022-11-22 01:59:29,082 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 [2022-11-22 01:59:29,090 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 [2022-11-22 01:59:29,098 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 [2022-11-22 01:59:29,106 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 [2022-11-22 01:59:29,163 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 [2022-11-22 01:59:29,171 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 [2022-11-22 01:59:29,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:59:31,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [878143014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:31,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:59:31,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2022-11-22 01:59:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161584807] [2022-11-22 01:59:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:59:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:59:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:59:31,299 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) [2022-11-22 01:59:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:32,303 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-22 01:59:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:59:32,304 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 [2022-11-22 01:59:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:32,304 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:59:32,304 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 01:59:32,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:59:32,306 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:32,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:59:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 01:59:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-22 01:59:32,313 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) [2022-11-22 01:59:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-22 01:59:32,314 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2022-11-22 01:59:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:32,314 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-22 01:59:32,315 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) [2022-11-22 01:59:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-22 01:59:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:59:32,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:32,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:32,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:59:32,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:32,521 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)] === [2022-11-22 01:59:32,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash -697599180, now seen corresponding path program 1 times [2022-11-22 01:59:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:32,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631385083] [2022-11-22 01:59:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:59:32,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631385083] [2022-11-22 01:59:32,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631385083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:59:32,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550971392] [2022-11-22 01:59:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:32,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:32,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:32,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:59:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:32,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:59:32,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:59:32,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:59:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:59:32,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550971392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:59:32,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [457978167] [2022-11-22 01:59:32,774 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:59:32,775 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:59:32,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:59:32,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:59:32,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:59:32,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,813 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:59:32,813 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 [2022-11-22 01:59:32,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,825 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 [2022-11-22 01:59:32,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,867 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-22 01:59:32,868 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 [2022-11-22 01:59:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,910 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 01:59:32,910 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 [2022-11-22 01:59:32,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:32,958 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 [2022-11-22 01:59:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:32,975 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 [2022-11-22 01:59:32,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:32,988 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 [2022-11-22 01:59:33,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,005 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 [2022-11-22 01:59:33,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,015 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 [2022-11-22 01:59:33,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,112 INFO L321 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-22 01:59:33,112 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 [2022-11-22 01:59:33,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,183 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 01:59:33,184 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 [2022-11-22 01:59:33,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,257 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 [2022-11-22 01:59:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,290 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 [2022-11-22 01:59:33,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,316 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 [2022-11-22 01:59:33,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,328 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 [2022-11-22 01:59:33,694 INFO L321 Elim1Store]: treesize reduction 256, result has 12.3 percent of original size [2022-11-22 01:59:33,695 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 [2022-11-22 01:59:33,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,797 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 [2022-11-22 01:59:33,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,918 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 [2022-11-22 01:59:33,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,948 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 [2022-11-22 01:59:33,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:33,971 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 [2022-11-22 01:59:33,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:33,985 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 [2022-11-22 01:59:34,312 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 [2022-11-22 01:59:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:34,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:59:34,329 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 [2022-11-22 01:59:34,338 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 [2022-11-22 01:59:34,360 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-22 01:59:34,360 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 [2022-11-22 01:59:34,426 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 [2022-11-22 01:59:34,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:34,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:59:34,446 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 01:59:34,446 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 [2022-11-22 01:59:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:59:34,474 INFO L321 Elim1Store]: treesize reduction 51, result has 12.1 percent of original size [2022-11-22 01:59:34,474 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 [2022-11-22 01:59:34,497 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:59:34,498 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 [2022-11-22 01:59:34,589 INFO L321 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2022-11-22 01:59:34,590 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 [2022-11-22 01:59:34,620 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-11-22 01:59:34,620 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 [2022-11-22 01:59:34,630 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 [2022-11-22 01:59:34,661 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 [2022-11-22 01:59:34,791 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 [2022-11-22 01:59:34,822 INFO L321 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2022-11-22 01:59:34,823 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 [2022-11-22 01:59:34,854 INFO L321 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2022-11-22 01:59:34,855 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 [2022-11-22 01:59:34,865 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 [2022-11-22 01:59:34,965 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 [2022-11-22 01:59:34,981 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 [2022-11-22 01:59:34,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:59:37,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [457978167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:37,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:59:37,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 15 [2022-11-22 01:59:37,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224131882] [2022-11-22 01:59:37,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:37,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:59:37,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:59:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:59:37,100 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) [2022-11-22 01:59:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:38,523 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-11-22 01:59:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:59:38,524 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 [2022-11-22 01:59:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:38,524 INFO L225 Difference]: With dead ends: 28 [2022-11-22 01:59:38,524 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:59:38,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:59:38,525 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 55 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:38,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 7 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:59:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:59:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:59:38,526 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) [2022-11-22 01:59:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:59:38,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-11-22 01:59:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:38,527 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:59:38,527 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) [2022-11-22 01:59:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:59:38,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:59:38,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-22 01:59:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-22 01:59:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-22 01:59:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-22 01:59:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-22 01:59:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-22 01:59:38,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:59:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:38,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:59:40,074 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)) [2022-11-22 01:59:40,074 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,075 INFO L902 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point L593(lines 593 605) no Hoare annotation was computed. [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point L585-3(line 585) no Hoare annotation was computed. [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point L585-4(line 585) no Hoare annotation was computed. [2022-11-22 01:59:40,075 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))) [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:59:40,075 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,076 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2022-11-22 01:59:40,076 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:59:40,076 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,076 INFO L899 garLoopResultBuilder]: For program point L599-1(lines 599 602) no Hoare annotation was computed. [2022-11-22 01:59:40,076 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|)) [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point L599-4(lines 599 602) no Hoare annotation was computed. [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point L612(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point L612-1(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point L612-5(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,077 INFO L899 garLoopResultBuilder]: For program point L612-6(line 612) no Hoare annotation was computed. [2022-11-22 01:59:40,078 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) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (<= |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)) [2022-11-22 01:59:40,078 INFO L899 garLoopResultBuilder]: For program point L592(lines 592 606) no Hoare annotation was computed. [2022-11-22 01:59:40,080 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:40,083 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:59:40,103 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-22 01:59:40,104 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-22 01:59:40,107 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-22 01:59:40,107 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-22 01:59:40,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:59:40 BoogieIcfgContainer [2022-11-22 01:59:40,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:59:40,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:59:40,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:59:40,112 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:59:40,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:11" (3/4) ... [2022-11-22 01:59:40,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:59:40,125 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-22 01:59:40,125 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-22 01:59:40,125 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:59:40,126 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:59:40,150 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) [2022-11-22 01:59:40,151 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 [2022-11-22 01:59:40,151 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && 0 <= i + 2147483648) && 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 [2022-11-22 01:59:40,152 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 [2022-11-22 01:59:40,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:59:40,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:59:40,176 INFO L158 Benchmark]: Toolchain (without parser) took 29649.29ms. Allocated memory was 146.8MB in the beginning and 371.2MB in the end (delta: 224.4MB). Free memory was 101.4MB in the beginning and 279.3MB in the end (delta: -177.9MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,176 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:59:40,176 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.69ms. Allocated memory is still 146.8MB. Free memory was 100.9MB in the beginning and 84.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,177 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.82ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 82.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,178 INFO L158 Benchmark]: Boogie Preprocessor took 52.29ms. Allocated memory is still 146.8MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,183 INFO L158 Benchmark]: RCFGBuilder took 519.07ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 62.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,183 INFO L158 Benchmark]: TraceAbstraction took 28453.46ms. Allocated memory was 146.8MB in the beginning and 371.2MB in the end (delta: 224.4MB). Free memory was 116.4MB in the beginning and 282.4MB in the end (delta: -166.0MB). Peak memory consumption was 220.8MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,184 INFO L158 Benchmark]: Witness Printer took 61.10ms. Allocated memory is still 371.2MB. Free memory was 282.4MB in the beginning and 279.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:59:40,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.69ms. Allocated memory is still 146.8MB. Free memory was 100.9MB in the beginning and 84.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.82ms. Allocated memory is still 146.8MB. Free memory was 84.1MB in the beginning and 82.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.29ms. Allocated memory is still 146.8MB. Free memory was 82.0MB in the beginning and 80.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.07ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 62.5MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 28453.46ms. Allocated memory was 146.8MB in the beginning and 371.2MB in the end (delta: 224.4MB). Free memory was 116.4MB in the beginning and 282.4MB in the end (delta: -166.0MB). Peak memory consumption was 220.8MB. Max. memory is 16.1GB. * Witness Printer took 61.10ms. Allocated memory is still 371.2MB. Free memory was 282.4MB in the beginning and 279.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$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: 28.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 268 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 481 IncrementalHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 110 mSDtfsCounter, 481 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 138 SyntacticMatches, 19 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 12.4s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 598 HoareAnnotationTreeSize, 5 FomulaSimplifications, 72 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 2056 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1210 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 27/44 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: 9.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 52, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 107, TOOLS_POST_TIME: 8.4s, 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: 8.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.6s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 192, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.3s, 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: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 52, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 5.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 5.5s, 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 [2022-11-22 01:59:40,207 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-22 01:59:40,208 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2022-11-22 01:59:40,209 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2022-11-22 01:59:40,210 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) && 0 <= i + 2147483648) && 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! [2022-11-22 01:59:40,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94280ba-98ff-4eb3-9d85-d28b8359916e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE