./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:42:52,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:42:52,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:42:52,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:42:52,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:42:52,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:42:52,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:42:52,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:42:52,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:42:52,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:42:52,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:42:52,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:42:52,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:42:52,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:42:52,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:42:52,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:42:52,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:42:52,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:42:52,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:42:52,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:42:52,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:42:52,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:42:52,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:42:52,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:42:52,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:42:52,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:42:52,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:42:52,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:42:52,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:42:52,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:42:52,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:42:52,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:42:52,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:42:52,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:42:52,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:42:52,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:42:52,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:42:52,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:42:52,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:42:52,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:42:52,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:42:52,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:42:52,690 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:42:52,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:42:52,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:42:52,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:42:52,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:42:52,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:42:52,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:42:52,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:42:52,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:42:52,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:42:52,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:42:52,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:42:52,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:42:52,697 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:42:52,697 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:42:52,698 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:42:52,698 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:42:52,698 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:42:52,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:42:52,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:42:52,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:42:52,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:42:52,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:42:52,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:42:52,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:42:52,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:42:52,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:42:52,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:42:52,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:42:52,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:42:52,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:42:52,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:42:52,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:42:52,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:42:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:42:52,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:42:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:42:52,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:42:52,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:42:52,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:42:52,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:42:52,708 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2021-11-20 23:42:52,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:42:53,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:42:53,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:42:53,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:42:53,008 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:42:53,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-20 23:42:53,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/0971b3d5c/ddaae49fe3bb40cdb2f1d8f0f66604a0/FLAG5ce5ad7e4 [2021-11-20 23:42:53,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:42:53,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-20 23:42:53,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/0971b3d5c/ddaae49fe3bb40cdb2f1d8f0f66604a0/FLAG5ce5ad7e4 [2021-11-20 23:42:53,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/0971b3d5c/ddaae49fe3bb40cdb2f1d8f0f66604a0 [2021-11-20 23:42:53,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:42:53,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:42:53,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:42:53,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:42:53,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:42:53,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:53" (1/1) ... [2021-11-20 23:42:53,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa39529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:53, skipping insertion in model container [2021-11-20 23:42:53,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:53" (1/1) ... [2021-11-20 23:42:53,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:42:53,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:42:54,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-20 23:42:54,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:42:54,179 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:42:54,200 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-20 23:42:54,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:42:54,214 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:42:54,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54 WrapperNode [2021-11-20 23:42:54,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:42:54,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:42:54,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:42:54,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:42:54,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,251 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-11-20 23:42:54,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:42:54,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:42:54,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:42:54,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:42:54,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:42:54,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:42:54,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:42:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:42:54,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (1/1) ... [2021-11-20 23:42:54,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:42:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:54,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:42:54,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:42:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:42:54,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:42:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:42:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:42:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2021-11-20 23:42:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2021-11-20 23:42:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:42:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:42:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:42:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:42:54,477 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:42:54,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:42:54,610 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:42:54,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:42:54,642 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:42:54,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:54 BoogieIcfgContainer [2021-11-20 23:42:54,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:42:54,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:42:54,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:42:54,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:42:54,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:42:53" (1/3) ... [2021-11-20 23:42:54,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542dbc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:54, skipping insertion in model container [2021-11-20 23:42:54,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:54" (2/3) ... [2021-11-20 23:42:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542dbc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:54, skipping insertion in model container [2021-11-20 23:42:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:54" (3/3) ... [2021-11-20 23:42:54,655 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2021-11-20 23:42:54,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:42:54,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:42:54,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:42:54,718 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:42:54,718 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:42:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:42:54,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:54,741 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:54,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2038165787, now seen corresponding path program 1 times [2021-11-20 23:42:54,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:54,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663023219] [2021-11-20 23:42:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:54,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 23:42:54,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663023219] [2021-11-20 23:42:54,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663023219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:54,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:42:54,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:42:54,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013789616] [2021-11-20 23:42:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:54,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:42:54,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:54,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:42:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:42:54,969 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:42:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:55,011 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-20 23:42:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:42:55,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-20 23:42:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:55,021 INFO L225 Difference]: With dead ends: 33 [2021-11-20 23:42:55,021 INFO L226 Difference]: Without dead ends: 16 [2021-11-20 23:42:55,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:42:55,029 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:55,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-20 23:42:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-20 23:42:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-20 23:42:55,068 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-20 23:42:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:55,069 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-20 23:42:55,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:42:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-20 23:42:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:42:55,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:55,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:55,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:42:55,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash -524670362, now seen corresponding path program 1 times [2021-11-20 23:42:55,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584503067] [2021-11-20 23:42:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:55,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 23:42:55,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:55,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584503067] [2021-11-20 23:42:55,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584503067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:55,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833919673] [2021-11-20 23:42:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:55,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:55,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:55,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:42:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:55,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:42:55,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 23:42:55,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:42:55,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833919673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:55,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:55,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-20 23:42:55,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779164114] [2021-11-20 23:42:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:55,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:42:55,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:42:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:55,395 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:55,417 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-20 23:42:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:42:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-20 23:42:55,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:55,421 INFO L225 Difference]: With dead ends: 29 [2021-11-20 23:42:55,421 INFO L226 Difference]: Without dead ends: 17 [2021-11-20 23:42:55,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:55,424 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:55,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-20 23:42:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-20 23:42:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-20 23:42:55,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-20 23:42:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:55,431 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-20 23:42:55,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-20 23:42:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:42:55,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:55,437 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:55,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:55,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:55,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:55,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash -664333790, now seen corresponding path program 1 times [2021-11-20 23:42:55,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:55,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135687278] [2021-11-20 23:42:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:55,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:42:55,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135687278] [2021-11-20 23:42:55,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135687278] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527941155] [2021-11-20 23:42:55,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:55,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:55,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:55,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:55,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:42:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:55,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:42:55,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 23:42:55,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:42:55,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527941155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:42:55,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:42:55,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-20 23:42:55,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684278174] [2021-11-20 23:42:55,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:42:55,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:42:55,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:42:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:55,974 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:56,002 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-20 23:42:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:42:56,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-20 23:42:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:56,004 INFO L225 Difference]: With dead ends: 27 [2021-11-20 23:42:56,005 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 23:42:56,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:42:56,009 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:56,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 23:42:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 23:42:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-20 23:42:56,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-20 23:42:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:56,027 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-20 23:42:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:42:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-20 23:42:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 23:42:56,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:56,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:56,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:56,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-20 23:42:56,255 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1922418725, now seen corresponding path program 1 times [2021-11-20 23:42:56,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142115817] [2021-11-20 23:42:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:56,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 23:42:56,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:56,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142115817] [2021-11-20 23:42:56,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142115817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:56,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552184] [2021-11-20 23:42:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:56,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:56,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:56,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:56,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:42:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:56,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:42:56,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:42:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 23:42:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:42:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 23:42:56,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:42:56,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [118361598] [2021-11-20 23:42:56,621 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:42:56,621 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:42:56,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:42:56,632 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:42:56,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:42:56,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:56,760 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:42:56,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:42:56,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:56,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:42:56,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:56,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:42:57,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:57,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:42:57,080 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:42:57,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:42:57,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:42:57,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:57,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:42:58,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:58,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-20 23:42:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:58,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:58,333 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-20 23:42:58,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-20 23:42:58,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:42:58,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:42:58,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:42:58,983 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:42:59,162 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:42:59,626 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:42:59,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:42:59,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-20 23:42:59,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925705548] [2021-11-20 23:42:59,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:42:59,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:42:59,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:42:59,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:42:59,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:42:59,629 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:42:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:42:59,657 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-20 23:42:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:42:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-20 23:42:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:42:59,658 INFO L225 Difference]: With dead ends: 36 [2021-11-20 23:42:59,658 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 23:42:59,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:42:59,660 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:42:59,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:42:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 23:42:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-20 23:42:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:42:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-20 23:42:59,666 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-20 23:42:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:42:59,666 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-20 23:42:59,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:42:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-20 23:42:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:42:59,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:42:59,668 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:42:59,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:42:59,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:59,896 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:42:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:42:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 763213520, now seen corresponding path program 2 times [2021-11-20 23:42:59,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:42:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653498735] [2021-11-20 23:42:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:42:59,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:42:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:42:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:42:59,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:42:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653498735] [2021-11-20 23:42:59,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653498735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:42:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106683460] [2021-11-20 23:42:59,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:42:59,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:42:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:42:59,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:42:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:43:00,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:43:00,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:00,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:43:00,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:43:00,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:43:00,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106683460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348977509] [2021-11-20 23:43:00,154 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:00,154 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:00,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:00,156 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:00,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:00,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,204 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:00,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:00,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:00,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:00,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,371 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:00,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:00,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:00,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:00,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:01,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,110 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:01,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:01,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:01,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:01,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:01,641 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:01,822 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:02,297 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:02,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:02,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 23:43:02,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884598141] [2021-11-20 23:43:02,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:02,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:43:02,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:43:02,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:43:02,300 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:02,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:02,332 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-20 23:43:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:43:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-20 23:43:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:02,333 INFO L225 Difference]: With dead ends: 38 [2021-11-20 23:43:02,334 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 23:43:02,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:43:02,335 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:02,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:43:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 23:43:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-20 23:43:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-20 23:43:02,340 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-20 23:43:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-20 23:43:02,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-20 23:43:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 23:43:02,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:02,343 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:02,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:02,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:02,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 843318224, now seen corresponding path program 3 times [2021-11-20 23:43:02,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:02,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239140426] [2021-11-20 23:43:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:02,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-20 23:43:02,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239140426] [2021-11-20 23:43:02,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239140426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997658008] [2021-11-20 23:43:02,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:43:02,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:02,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:02,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:43:02,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:43:02,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:02,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:43:02,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:02,808 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 23:43:02,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 23:43:02,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997658008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:02,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1508246107] [2021-11-20 23:43:02,945 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:02,945 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:02,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:02,946 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:02,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:02,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:02,986 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:43:02,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:43:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:03,030 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:03,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:03,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:03,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:03,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:03,181 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:03,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:03,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:03,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:03,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:04,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:04,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,064 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:04,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:04,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:04,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:04,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:04,612 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:04,802 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:05,365 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:05,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:05,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-20 23:43:05,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913522997] [2021-11-20 23:43:05,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:05,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:43:05,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:43:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:43:05,368 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 23:43:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:05,428 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-20 23:43:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 23:43:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2021-11-20 23:43:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:05,430 INFO L225 Difference]: With dead ends: 49 [2021-11-20 23:43:05,430 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 23:43:05,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-11-20 23:43:05,432 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:05,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 23:43:05,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 23:43:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-20 23:43:05,438 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-20 23:43:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:05,439 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-20 23:43:05,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 23:43:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-20 23:43:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 23:43:05,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:05,441 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:05,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 23:43:05,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:05,656 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 834270235, now seen corresponding path program 4 times [2021-11-20 23:43:05,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198290783] [2021-11-20 23:43:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:05,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 23:43:05,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198290783] [2021-11-20 23:43:05,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198290783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581419174] [2021-11-20 23:43:05,813 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:43:05,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:05,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:05,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:05,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:43:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:05,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:43:05,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 23:43:05,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 23:43:06,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581419174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43856136] [2021-11-20 23:43:06,202 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:06,202 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:06,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:06,202 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:06,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:06,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,248 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:06,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:06,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:06,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,430 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:06,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:06,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:06,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:06,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:07,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:07,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,155 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:07,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:07,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:07,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:07,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:07,679 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:07,849 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:08,415 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:08,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:08,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-20 23:43:08,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656145972] [2021-11-20 23:43:08,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:08,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 23:43:08,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 23:43:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:43:08,417 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:08,472 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-20 23:43:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 23:43:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-11-20 23:43:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:08,474 INFO L225 Difference]: With dead ends: 62 [2021-11-20 23:43:08,474 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 23:43:08,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:43:08,476 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:08,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:43:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 23:43:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-20 23:43:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-20 23:43:08,483 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-20 23:43:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:08,484 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-20 23:43:08,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-20 23:43:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 23:43:08,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:08,486 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:08,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:08,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:08,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash -208173989, now seen corresponding path program 5 times [2021-11-20 23:43:08,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:08,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132729388] [2021-11-20 23:43:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:08,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 23:43:09,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:09,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132729388] [2021-11-20 23:43:09,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132729388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:09,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575925174] [2021-11-20 23:43:09,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:43:09,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:09,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:43:09,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 23:43:09,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:09,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:43:09,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-20 23:43:09,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-20 23:43:09,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575925174] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:09,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1301430588] [2021-11-20 23:43:09,547 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:09,547 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:09,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:09,548 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:09,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,576 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:43:09,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:43:09,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,611 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:09,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:09,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:09,745 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:09,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:09,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:10,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:10,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-20 23:43:10,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,465 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-20 23:43:10,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-20 23:43:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:10,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:10,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:11,069 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:11,221 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:12,134 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:12,134 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:12,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-20 23:43:12,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651122383] [2021-11-20 23:43:12,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-20 23:43:12,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-20 23:43:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:43:12,137 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:12,222 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-20 23:43:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 23:43:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-20 23:43:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:12,227 INFO L225 Difference]: With dead ends: 69 [2021-11-20 23:43:12,227 INFO L226 Difference]: Without dead ends: 50 [2021-11-20 23:43:12,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2021-11-20 23:43:12,232 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:12,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-20 23:43:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-20 23:43:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-20 23:43:12,248 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-20 23:43:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:12,248 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-20 23:43:12,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-20 23:43:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:43:12,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:12,252 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:12,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:12,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 23:43:12,466 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1077789606, now seen corresponding path program 6 times [2021-11-20 23:43:12,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:12,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346719714] [2021-11-20 23:43:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:12,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:12,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346719714] [2021-11-20 23:43:12,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346719714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:12,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044937693] [2021-11-20 23:43:12,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:43:12,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:12,806 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:12,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 23:43:12,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:43:12,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:12,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 23:43:12,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:13,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:13,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044937693] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:13,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1234652324] [2021-11-20 23:43:13,753 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:13,753 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:13,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:13,754 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:13,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:13,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,778 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:43:13,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:43:13,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,809 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:13,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:13,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:13,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:13,948 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:13,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:14,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:14,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:14,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-20 23:43:14,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,617 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-20 23:43:14,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 67 [2021-11-20 23:43:14,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:14,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:14,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:15,135 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:15,297 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:16,076 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:16,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:16,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-20 23:43:16,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486447896] [2021-11-20 23:43:16,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:16,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-20 23:43:16,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-20 23:43:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=2702, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:43:16,081 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:16,188 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-20 23:43:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 23:43:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2021-11-20 23:43:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:16,192 INFO L225 Difference]: With dead ends: 100 [2021-11-20 23:43:16,192 INFO L226 Difference]: Without dead ends: 75 [2021-11-20 23:43:16,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1330, Invalid=2702, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:43:16,197 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:16,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-20 23:43:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-20 23:43:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-20 23:43:16,221 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-20 23:43:16,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:16,221 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-20 23:43:16,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-20 23:43:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-20 23:43:16,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:16,228 INFO L514 BasicCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:16,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:16,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:16,462 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1675595141, now seen corresponding path program 7 times [2021-11-20 23:43:16,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:16,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551059822] [2021-11-20 23:43:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:16,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:17,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551059822] [2021-11-20 23:43:17,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551059822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135036974] [2021-11-20 23:43:17,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:43:17,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:17,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:17,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:17,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 23:43:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:17,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 23:43:17,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:18,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:20,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135036974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:20,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840455427] [2021-11-20 23:43:20,765 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:20,765 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:20,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:20,766 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:20,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:20,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:20,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:20,806 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:20,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:20,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:20,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:20,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:20,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:20,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:20,969 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:20,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:21,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:21,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:21,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:21,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:21,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,805 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:21,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:21,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:21,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:22,298 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:22,440 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:23,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:23,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:23,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-20 23:43:23,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762415982] [2021-11-20 23:43:23,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:23,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-20 23:43:23,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-20 23:43:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-20 23:43:23,131 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:23,314 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-20 23:43:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-20 23:43:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2021-11-20 23:43:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:23,316 INFO L225 Difference]: With dead ends: 150 [2021-11-20 23:43:23,316 INFO L226 Difference]: Without dead ends: 125 [2021-11-20 23:43:23,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-20 23:43:23,325 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:23,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-20 23:43:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-20 23:43:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-20 23:43:23,352 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-20 23:43:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:23,354 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-20 23:43:23,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-20 23:43:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-20 23:43:23,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:23,359 INFO L514 BasicCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:23,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:23,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 23:43:23,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash -483746597, now seen corresponding path program 8 times [2021-11-20 23:43:23,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009022049] [2021-11-20 23:43:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:23,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-20 23:43:27,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009022049] [2021-11-20 23:43:27,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009022049] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:27,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303628198] [2021-11-20 23:43:27,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:43:27,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:27,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:27,036 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:27,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:43:27,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 23:43:27,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:27,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:43:27,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2021-11-20 23:43:27,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-20 23:43:27,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303628198] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:27,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904208434] [2021-11-20 23:43:27,741 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:27,741 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:27,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:27,742 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:27,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:27,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,780 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:43:27,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:43:27,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,815 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:27,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:27,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:27,940 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:27,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:28,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:28,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:28,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:28,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:28,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,599 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:28,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:28,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:28,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:28,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:29,053 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:29,209 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:30,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:30,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-20 23:43:30,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066292521] [2021-11-20 23:43:30,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-20 23:43:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-20 23:43:30,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5128, Invalid=9152, Unknown=0, NotChecked=0, Total=14280 [2021-11-20 23:43:30,190 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:30,352 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-20 23:43:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-20 23:43:30,353 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-11-20 23:43:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:30,355 INFO L225 Difference]: With dead ends: 155 [2021-11-20 23:43:30,356 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 23:43:30,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5128, Invalid=9152, Unknown=0, NotChecked=0, Total=14280 [2021-11-20 23:43:30,366 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:30,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 23:43:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-20 23:43:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-20 23:43:30,387 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-20 23:43:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:30,387 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-20 23:43:30,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-20 23:43:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 23:43:30,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:30,391 INFO L514 BasicCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:30,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:30,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:30,616 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash -531749082, now seen corresponding path program 9 times [2021-11-20 23:43:30,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:30,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973229905] [2021-11-20 23:43:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:30,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-20 23:43:34,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973229905] [2021-11-20 23:43:34,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973229905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058990445] [2021-11-20 23:43:34,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:43:34,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:34,116 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:34,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 23:43:34,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:43:34,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:34,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-20 23:43:34,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-20 23:43:34,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-20 23:43:35,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058990445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:35,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1897123198] [2021-11-20 23:43:35,012 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:35,012 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:35,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:35,013 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:35,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:35,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,046 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:35,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:35,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:43:35,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,197 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:43:35,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:43:35,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:35,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:35,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:35,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:35,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,863 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:35,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:35,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:35,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:35,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:36,316 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:36,498 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:37,769 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:37,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:37,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-20 23:43:37,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199218122] [2021-11-20 23:43:37,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:37,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-20 23:43:37,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-20 23:43:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5305, Invalid=8035, Unknown=0, NotChecked=0, Total=13340 [2021-11-20 23:43:37,772 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:37,876 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-20 23:43:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-20 23:43:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2021-11-20 23:43:37,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:37,878 INFO L225 Difference]: With dead ends: 160 [2021-11-20 23:43:37,878 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 23:43:37,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5305, Invalid=8035, Unknown=0, NotChecked=0, Total=13340 [2021-11-20 23:43:37,881 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:37,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 23:43:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-20 23:43:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-20 23:43:37,890 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-20 23:43:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:37,890 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-20 23:43:37,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:43:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-20 23:43:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 23:43:37,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:37,893 INFO L514 BasicCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:37,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:38,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 23:43:38,120 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:38,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1592501115, now seen corresponding path program 10 times [2021-11-20 23:43:38,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:38,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221252253] [2021-11-20 23:43:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:38,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-20 23:43:38,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:38,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221252253] [2021-11-20 23:43:38,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221252253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:38,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084924871] [2021-11-20 23:43:38,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:43:38,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:38,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:38,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:38,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 23:43:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:38,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 23:43:38,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-20 23:43:38,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-20 23:43:39,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084924871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1172119295] [2021-11-20 23:43:39,053 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:39,053 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:39,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:39,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:39,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,079 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:39,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:39,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:39,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:39,211 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:39,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:39,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:39,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:39,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:39,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:39,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,907 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:39,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:39,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:39,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:39,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:40,401 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:40,582 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:40,962 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:40,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:40,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-20 23:43:40,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395560947] [2021-11-20 23:43:40,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:40,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 23:43:40,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 23:43:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:43:40,964 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:40,997 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-20 23:43:41,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 23:43:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2021-11-20 23:43:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:41,014 INFO L225 Difference]: With dead ends: 171 [2021-11-20 23:43:41,014 INFO L226 Difference]: Without dead ends: 143 [2021-11-20 23:43:41,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 23:43:41,015 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:41,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:43:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-20 23:43:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-20 23:43:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-20 23:43:41,024 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-20 23:43:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:41,025 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-20 23:43:41,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-20 23:43:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-20 23:43:41,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:41,028 INFO L514 BasicCegarLoop]: trace histogram [100, 66, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:41,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:41,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 23:43:41,252 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:41,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1757404155, now seen corresponding path program 11 times [2021-11-20 23:43:41,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:41,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217588416] [2021-11-20 23:43:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:41,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6110 trivial. 0 not checked. [2021-11-20 23:43:41,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217588416] [2021-11-20 23:43:41,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217588416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550926380] [2021-11-20 23:43:41,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:43:41,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:41,659 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:41,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 23:43:41,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:43:41,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:43:41,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 1062 proven. 21 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2021-11-20 23:43:42,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2021-11-20 23:43:42,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550926380] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:42,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940413138] [2021-11-20 23:43:42,652 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:42,652 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:42,653 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:42,653 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:42,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:42,678 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:43:42,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:43:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:42,709 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:42,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:42,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:42,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:42,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:42,869 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:42,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:43,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:43,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:43,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:43,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:43,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,499 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:43,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:43,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:43,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:43,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:43,946 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:44,107 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:44,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:44,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:44,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-20 23:43:44,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029365637] [2021-11-20 23:43:44,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:44,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-20 23:43:44,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-20 23:43:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=2181, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:43:44,760 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:44,839 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-20 23:43:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-20 23:43:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 192 [2021-11-20 23:43:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:44,842 INFO L225 Difference]: With dead ends: 192 [2021-11-20 23:43:44,842 INFO L226 Difference]: Without dead ends: 152 [2021-11-20 23:43:44,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=471, Invalid=2181, Unknown=0, NotChecked=0, Total=2652 [2021-11-20 23:43:44,843 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:44,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-20 23:43:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-20 23:43:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-20 23:43:44,852 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-20 23:43:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:44,853 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-20 23:43:44,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:43:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-20 23:43:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-20 23:43:44,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:44,856 INFO L514 BasicCegarLoop]: trace histogram [100, 69, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:44,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:45,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:45,084 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:45,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1409666835, now seen corresponding path program 12 times [2021-11-20 23:43:45,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:45,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504133891] [2021-11-20 23:43:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:45,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-20 23:43:45,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:45,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504133891] [2021-11-20 23:43:45,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504133891] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:45,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126403274] [2021-11-20 23:43:45,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:43:45,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:45,524 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:45,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 23:43:45,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:43:45,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:43:45,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 23:43:45,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-20 23:43:46,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-20 23:43:46,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126403274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:46,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [848958903] [2021-11-20 23:43:46,861 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:46,861 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:46,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:46,862 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:46,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:46,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:46,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:46,908 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:46,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:46,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:46,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:46,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:46,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:47,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:47,063 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:47,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:47,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:47,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-20 23:43:47,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,676 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-20 23:43:47,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 67 [2021-11-20 23:43:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:47,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:47,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:48,145 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:48,289 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:48,754 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:48,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:48,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-20 23:43:48,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854393486] [2021-11-20 23:43:48,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:48,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-20 23:43:48,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-20 23:43:48,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:43:48,757 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:48,841 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-20 23:43:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 23:43:48,841 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2021-11-20 23:43:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:48,843 INFO L225 Difference]: With dead ends: 226 [2021-11-20 23:43:48,843 INFO L226 Difference]: Without dead ends: 177 [2021-11-20 23:43:48,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=2706, Unknown=0, NotChecked=0, Total=4032 [2021-11-20 23:43:48,845 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:48,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-20 23:43:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-20 23:43:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-20 23:43:48,855 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-20 23:43:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:48,855 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-20 23:43:48,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-20 23:43:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-20 23:43:48,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:48,858 INFO L514 BasicCegarLoop]: trace histogram [144, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:48,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:49,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 23:43:49,064 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2105385413, now seen corresponding path program 13 times [2021-11-20 23:43:49,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005790028] [2021-11-20 23:43:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:49,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-20 23:43:50,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:50,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005790028] [2021-11-20 23:43:50,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005790028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:50,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917501048] [2021-11-20 23:43:50,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:43:50,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:50,240 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:50,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 23:43:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:50,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-20 23:43:50,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:43:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 4804 proven. 1176 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-20 23:43:50,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:43:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-20 23:43:53,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917501048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:43:53,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [95874878] [2021-11-20 23:43:53,723 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:43:53,723 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:43:53,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:43:53,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:43:53,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:43:53,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:53,753 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:43:53,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:43:53,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:53,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-20 23:43:53,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:53,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:43:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:53,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:53,896 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:43:53,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:43:54,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:43:54,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:43:54,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:43:54,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:43:54,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,577 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:43:54,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:43:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:43:54,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:43:54,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:43:54,986 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:43:55,120 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:43:55,913 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:43:55,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:43:55,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-20 23:43:55,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019268788] [2021-11-20 23:43:55,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:43:55,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-20 23:43:55,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:43:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-20 23:43:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5102, Invalid=7780, Unknown=0, NotChecked=0, Total=12882 [2021-11-20 23:43:55,917 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:43:56,079 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-20 23:43:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-20 23:43:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 278 [2021-11-20 23:43:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:43:56,082 INFO L225 Difference]: With dead ends: 301 [2021-11-20 23:43:56,082 INFO L226 Difference]: Without dead ends: 227 [2021-11-20 23:43:56,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5102, Invalid=7780, Unknown=0, NotChecked=0, Total=12882 [2021-11-20 23:43:56,084 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:43:56,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:43:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-20 23:43:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-20 23:43:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:43:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-20 23:43:56,096 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-20 23:43:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:43:56,097 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-20 23:43:56,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 23:43:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-20 23:43:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-20 23:43:56,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:43:56,101 INFO L514 BasicCegarLoop]: trace histogram [294, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:43:56,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:43:56,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 23:43:56,324 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:43:56,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:43:56,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1104262907, now seen corresponding path program 14 times [2021-11-20 23:43:56,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:43:56,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962910830] [2021-11-20 23:43:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:43:56,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:43:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:43:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 24455 refuted. 0 times theorem prover too weak. 24662 trivial. 0 not checked. [2021-11-20 23:43:59,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:43:59,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962910830] [2021-11-20 23:43:59,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962910830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:43:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212640896] [2021-11-20 23:43:59,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:43:59,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:43:59,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:43:59,900 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:43:59,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 23:44:02,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-20 23:44:02,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:02,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:44:02,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 19606 proven. 105 refuted. 0 times theorem prover too weak. 29406 trivial. 0 not checked. [2021-11-20 23:44:03,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49012 trivial. 0 not checked. [2021-11-20 23:44:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212640896] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:04,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1019973166] [2021-11-20 23:44:04,848 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:44:04,849 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:44:04,849 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:44:04,849 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:44:04,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:44:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:04,896 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:44:04,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:44:04,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:04,925 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:44:04,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:44:04,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:04,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:44:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:44:05,057 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:44:05,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:44:05,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:44:05,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:44:05,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:44:05,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:44:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,743 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:44:05,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:44:05,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:05,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:44:05,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:44:06,225 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:44:06,371 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:44:07,663 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:44:07,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:44:07,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-20 23:44:07,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533903462] [2021-11-20 23:44:07,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:07,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-20 23:44:07,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:07,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-20 23:44:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5599, Invalid=14993, Unknown=0, NotChecked=0, Total=20592 [2021-11-20 23:44:07,668 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:44:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:07,867 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-20 23:44:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-20 23:44:07,868 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 428 [2021-11-20 23:44:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:07,870 INFO L225 Difference]: With dead ends: 368 [2021-11-20 23:44:07,870 INFO L226 Difference]: Without dead ends: 244 [2021-11-20 23:44:07,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4806 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=5599, Invalid=14993, Unknown=0, NotChecked=0, Total=20592 [2021-11-20 23:44:07,871 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:07,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:44:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-20 23:44:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-20 23:44:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-20 23:44:07,884 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-20 23:44:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:07,885 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-20 23:44:07,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 23:44:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-20 23:44:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-20 23:44:07,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:07,889 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:07,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:08,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 23:44:08,112 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1043142509, now seen corresponding path program 15 times [2021-11-20 23:44:08,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:08,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295624852] [2021-11-20 23:44:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:08,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-20 23:44:08,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295624852] [2021-11-20 23:44:08,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295624852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:44:08,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540242359] [2021-11-20 23:44:08,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:44:08,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:08,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:08,888 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:08,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 23:44:09,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:44:09,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:09,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-20 23:44:09,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 20004 proven. 465 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-20 23:44:09,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-20 23:44:11,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540242359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941269022] [2021-11-20 23:44:11,227 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:44:11,227 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:44:11,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:44:11,228 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:44:11,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:44:11,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,248 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:44:11,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:44:11,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,272 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:44:11,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:44:11,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:44:11,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:44:11,385 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:44:11,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 186 treesize of output 185 [2021-11-20 23:44:11,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:44:11,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:11,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:44:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:12,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-20 23:44:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:12,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:12,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:12,177 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-20 23:44:12,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-20 23:44:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:12,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:44:12,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:44:12,685 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:44:12,873 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:44:13,386 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:44:13,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:44:13,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-20 23:44:13,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973845143] [2021-11-20 23:44:13,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:13,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-20 23:44:13,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-20 23:44:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2131, Invalid=3875, Unknown=0, NotChecked=0, Total=6006 [2021-11-20 23:44:13,389 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:13,462 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-20 23:44:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-20 23:44:13,463 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2021-11-20 23:44:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:13,465 INFO L225 Difference]: With dead ends: 383 [2021-11-20 23:44:13,465 INFO L226 Difference]: Without dead ends: 276 [2021-11-20 23:44:13,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2131, Invalid=3875, Unknown=0, NotChecked=0, Total=6006 [2021-11-20 23:44:13,467 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:13,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:44:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-20 23:44:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-20 23:44:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-20 23:44:13,482 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-20 23:44:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:13,482 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-20 23:44:13,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-20 23:44:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-20 23:44:13,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:13,487 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 62, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:13,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:13,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 23:44:13,692 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash -64332435, now seen corresponding path program 16 times [2021-11-20 23:44:13,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:13,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640720585] [2021-11-20 23:44:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:13,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-20 23:44:15,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:44:15,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640720585] [2021-11-20 23:44:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640720585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:44:15,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181204671] [2021-11-20 23:44:15,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-20 23:44:15,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:15,478 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:15,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 23:44:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:15,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-20 23:44:15,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 20004 proven. 1953 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-20 23:44:16,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-20 23:44:18,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181204671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1384978665] [2021-11-20 23:44:18,869 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-20 23:44:18,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:44:18,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:44:18,869 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:44:18,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:44:18,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,890 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 23:44:18,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-20 23:44:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,915 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:44:18,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-20 23:44:18,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:44:18,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,006 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:44:19,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 184 [2021-11-20 23:44:19,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-20 23:44:19,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-20 23:44:19,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:44:19,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-20 23:44:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,562 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-20 23:44:19,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-20 23:44:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:44:19,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-20 23:44:19,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 23:44:19,959 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 15 for LOIs [2021-11-20 23:44:20,108 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:44:20,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:44:20,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:44:20,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-20 23:44:20,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994029019] [2021-11-20 23:44:20,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:20,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-20 23:44:20,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:44:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-20 23:44:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5203, Invalid=7907, Unknown=0, NotChecked=0, Total=13110 [2021-11-20 23:44:20,984 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:21,133 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-20 23:44:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-20 23:44:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 479 [2021-11-20 23:44:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:21,136 INFO L225 Difference]: With dead ends: 420 [2021-11-20 23:44:21,136 INFO L226 Difference]: Without dead ends: 313 [2021-11-20 23:44:21,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5203, Invalid=7907, Unknown=0, NotChecked=0, Total=13110 [2021-11-20 23:44:21,139 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:21,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:44:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-20 23:44:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-20 23:44:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.0097402597402598) internal successors, (311), 308 states have internal predecessors, (311), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-20 23:44:21,155 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-20 23:44:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:21,156 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-20 23:44:21,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-20 23:44:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-20 23:44:21,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:21,160 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:21,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:21,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:21,376 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:21,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash -6882064, now seen corresponding path program 17 times [2021-11-20 23:44:21,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:44:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255513002] [2021-11-20 23:44:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:21,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:44:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:44:33,839 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:44:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:44:39,435 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:44:39,435 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:44:39,436 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:44:39,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 23:44:39,444 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-20 23:44:39,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:44:39,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:44:39 BoogieIcfgContainer [2021-11-20 23:44:39,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:44:39,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:44:39,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:44:39,807 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:44:39,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:54" (3/4) ... [2021-11-20 23:44:39,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 23:44:39,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:44:39,812 INFO L158 Benchmark]: Toolchain (without parser) took 105879.37ms. Allocated memory was 127.9MB in the beginning and 922.7MB in the end (delta: 794.8MB). Free memory was 91.6MB in the beginning and 551.9MB in the end (delta: -460.3MB). Peak memory consumption was 334.0MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,812 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:44:39,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.25ms. Allocated memory is still 127.9MB. Free memory was 91.4MB in the beginning and 102.2MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.18ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,814 INFO L158 Benchmark]: Boogie Preprocessor took 26.20ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,815 INFO L158 Benchmark]: RCFGBuilder took 366.62ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 87.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,816 INFO L158 Benchmark]: TraceAbstraction took 105159.22ms. Allocated memory was 127.9MB in the beginning and 922.7MB in the end (delta: 794.8MB). Free memory was 87.0MB in the beginning and 551.9MB in the end (delta: -464.9MB). Peak memory consumption was 741.5MB. Max. memory is 16.1GB. [2021-11-20 23:44:39,816 INFO L158 Benchmark]: Witness Printer took 4.24ms. Allocated memory is still 922.7MB. Free memory is still 551.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:44:39,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 107.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.25ms. Allocated memory is still 127.9MB. Free memory was 91.4MB in the beginning and 102.2MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.18ms. Allocated memory is still 127.9MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.20ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 366.62ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 87.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 105159.22ms. Allocated memory was 127.9MB in the beginning and 922.7MB in the end (delta: 794.8MB). Free memory was 87.0MB in the beginning and 551.9MB in the end (delta: -464.9MB). Peak memory consumption was 741.5MB. Max. memory is 16.1GB. * Witness Printer took 4.24ms. Allocated memory is still 922.7MB. Free memory is still 551.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L31] int x[100]; [L32] int temp; [L33] int ret; [L34] int ret2; [L35] int ret5; [L37] int i = 0; VAL [i=0, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=1, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=2, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=3, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=4, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=5, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=6, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=7, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=8, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=9, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=10, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=11, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=12, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=13, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=14, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=15, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=16, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=17, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=18, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=19, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=20, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=21, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=22, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=23, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=24, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=25, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=26, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=27, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=28, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=29, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=30, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=31, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=32, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=33, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=34, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=35, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=36, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=37, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=38, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=39, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=40, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=41, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=42, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=43, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=44, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=45, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=46, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=47, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=48, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=49, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=50, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=51, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=52, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=53, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=54, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=55, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=56, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=57, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=58, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=59, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=60, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=61, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=62, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=63, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=64, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=65, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=66, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=67, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=68, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=69, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=70, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=71, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=72, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=73, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=74, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=75, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=76, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=77, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=78, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=79, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=80, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=81, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=82, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=83, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=84, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=85, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=86, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=87, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=88, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=89, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=90, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=91, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=92, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=93, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=94, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=95, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=96, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=97, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=98, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=99, x={3:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=100, x={3:0}] [L37] COND FALSE !(i < 100) VAL [i=100, x={3:0}] [L41] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L41] RET, EXPR bAnd(x) VAL [bAnd(x)=61, i=100, x={3:0}] [L41] ret = bAnd(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp VAL [i=100, ret=61, temp=-3, x={3:0}] [L44] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L44] RET, EXPR bAnd(x) VAL [bAnd(x)=-1, i=100, ret=61, temp=-3, x={3:0}] [L44] ret2 = bAnd(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=1, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=2, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=3, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=4, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=5, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=6, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=7, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=8, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=9, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=10, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=11, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=12, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=13, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=14, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=15, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=16, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=17, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=18, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=19, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=20, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=21, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=22, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=23, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=24, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=25, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=26, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=27, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=28, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=29, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=30, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=31, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=32, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=33, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=34, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=35, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=36, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=37, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=38, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=39, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=40, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=41, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=42, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=43, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=44, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=45, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=46, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=47, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=48, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=49, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=50, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=51, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=52, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=53, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=54, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=55, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=56, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=57, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=58, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=59, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=60, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=61, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=62, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=63, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=64, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=65, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=66, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=67, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=68, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=69, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=70, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=71, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=72, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=73, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=74, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=75, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=76, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=77, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=78, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=79, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=80, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=81, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=82, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=83, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=84, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=85, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=86, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=87, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=88, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=89, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=90, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=91, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=92, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=93, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=94, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=95, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=96, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=97, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=98, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=99, ret=61, ret2=-1, temp=-3, x={3:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=100, i=99, ret=61, ret2=-1, temp=-3, x={3:0}] [L50] CALL, EXPR bAnd(x) VAL [x={3:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=2, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=3, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=4, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=5, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=6, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=7, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=8, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=9, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=10, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=11, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=12, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=13, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=14, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=15, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=16, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=17, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=18, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=19, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=20, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=21, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=22, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=23, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=24, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=25, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=26, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=27, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=28, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=29, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=30, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=31, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=32, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=33, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=34, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=35, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=36, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=37, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=38, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=39, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=40, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=41, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=42, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=43, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=44, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=45, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=46, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=47, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=48, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=49, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=50, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=51, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=52, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=53, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=54, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=55, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=56, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=57, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=58, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=59, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=60, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=61, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=62, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=63, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=64, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=65, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=66, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=67, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=68, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=69, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=70, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=71, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=72, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=73, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=74, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=75, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=76, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=77, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=78, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=79, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=80, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=81, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=82, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=83, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=84, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=85, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=86, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=87, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=88, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=89, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=90, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=91, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=92, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=93, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=94, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=95, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=96, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=97, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=98, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=99, x={3:0}, x={3:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res & x[i] [L23] i++ VAL [i=100, x={3:0}, x={3:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L50] RET, EXPR bAnd(x) VAL [bAnd(x)=62, i=99, i=100, ret=61, ret2=-1, temp=-3, x={3:0}] [L50] ret5 = bAnd(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=100, i=99, ret=61, ret2=-1, ret5=62, temp=-3, x={3:0}] [L53] reach_error() VAL [i=99, i=100, ret=61, ret2=-1, ret5=62, temp=-3, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 104.7s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1257 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 229 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9225 GetRequests, 8076 SyntacticMatches, 2 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21209 ImplicationChecksByTransitivity, 36.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=19, InterpolantAutomatonStates: 962, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 17.8s SatisfiabilityAnalysisTime, 36.0s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 8616 ConstructedInterpolants, 0 QuantifiedInterpolants, 11458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 9910 ConjunctsInSsa, 421 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 531682/606421 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 23:44:39,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:44:42,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:44:42,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:44:42,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:44:42,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:44:42,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:44:42,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:44:42,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:44:42,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:44:42,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:44:42,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:44:42,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:44:42,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:44:42,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:44:42,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:44:42,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:44:42,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:44:42,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:44:42,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:44:42,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:44:42,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:44:42,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:44:42,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:44:42,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:44:42,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:44:42,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:44:42,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:44:42,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:44:42,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:44:42,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:44:42,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:44:42,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:44:42,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:44:42,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:44:42,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:44:42,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:44:42,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:44:42,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:44:42,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:44:42,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:44:42,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:44:42,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-20 23:44:42,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:44:42,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:44:42,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:44:42,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:44:42,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:44:42,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:44:42,409 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:44:42,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:44:42,410 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:44:42,410 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:44:42,411 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:44:42,412 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:44:42,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:44:42,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:44:42,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:44:42,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:44:42,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:44:42,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:44:42,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:44:42,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:44:42,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:44:42,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:44:42,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:44:42,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:44:42,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:44:42,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:44:42,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:44:42,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:44:42,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:44:42,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:44:42,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:44:42,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:44:42,419 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:44:42,419 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:42,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:44:42,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:44:42,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:44:42,421 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad5600d67d8e26bbe74b5b2723c79b08c56f70a1300290f9b8c920a6b187d1e0 [2021-11-20 23:44:42,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:44:42,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:44:42,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:44:42,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:44:42,819 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:44:42,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-20 23:44:42,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/d0c19463a/65b4b5186d2a448da7e6030790cb93e0/FLAG6cae22383 [2021-11-20 23:44:43,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:44:43,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i [2021-11-20 23:44:43,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/d0c19463a/65b4b5186d2a448da7e6030790cb93e0/FLAG6cae22383 [2021-11-20 23:44:43,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/data/d0c19463a/65b4b5186d2a448da7e6030790cb93e0 [2021-11-20 23:44:43,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:44:43,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:44:43,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:44:43,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:44:43,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:44:43,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:43" (1/1) ... [2021-11-20 23:44:43,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e111835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:43, skipping insertion in model container [2021-11-20 23:44:43,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:43" (1/1) ... [2021-11-20 23:44:43,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:44:43,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:44:43,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-20 23:44:43,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:44:44,007 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:44:44,030 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/sv-benchmarks/c/array-crafted/bAnd1.i[1290,1303] [2021-11-20 23:44:44,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:44:44,080 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:44:44,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44 WrapperNode [2021-11-20 23:44:44,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:44:44,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:44:44,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:44:44,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:44:44,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,130 INFO L137 Inliner]: procedures = 18, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2021-11-20 23:44:44,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:44:44,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:44:44,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:44:44,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:44:44,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:44:44,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:44:44,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:44:44,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:44:44,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (1/1) ... [2021-11-20 23:44:44,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:44:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:44,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:44:44,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:44:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:44:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:44:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:44:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:44:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2021-11-20 23:44:44,238 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2021-11-20 23:44:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:44:44,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:44:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:44:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:44:44,313 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:44:44,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:44:44,500 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:44:44,506 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:44:44,506 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:44:44,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:44 BoogieIcfgContainer [2021-11-20 23:44:44,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:44:44,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:44:44,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:44:44,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:44:44,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:44:43" (1/3) ... [2021-11-20 23:44:44,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2311e7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:44, skipping insertion in model container [2021-11-20 23:44:44,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:44" (2/3) ... [2021-11-20 23:44:44,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2311e7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:44, skipping insertion in model container [2021-11-20 23:44:44,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:44" (3/3) ... [2021-11-20 23:44:44,534 INFO L111 eAbstractionObserver]: Analyzing ICFG bAnd1.i [2021-11-20 23:44:44,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:44:44,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:44:44,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:44:44,646 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:44:44,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:44:44,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 23:44:44,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:44,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:44,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:44,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2021-11-20 23:44:44,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:44,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069782115] [2021-11-20 23:44:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:44,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:44,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:44,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:44,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:44:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:44,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:44:44,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:44,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:45,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:45,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069782115] [2021-11-20 23:44:45,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069782115] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:45,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:44:45,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:44:45,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697042320] [2021-11-20 23:44:45,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:45,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:44:45,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:44:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:44:45,096 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:44:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:45,152 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-20 23:44:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:44:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2021-11-20 23:44:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:45,164 INFO L225 Difference]: With dead ends: 51 [2021-11-20 23:44:45,165 INFO L226 Difference]: Without dead ends: 25 [2021-11-20 23:44:45,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:44:45,176 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:45,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:44:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-20 23:44:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-20 23:44:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-20 23:44:45,241 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2021-11-20 23:44:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:45,241 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-20 23:44:45,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-20 23:44:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-20 23:44:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 23:44:45,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:45,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:45,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:45,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:45,469 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:45,473 INFO L85 PathProgramCache]: Analyzing trace with hash 339608831, now seen corresponding path program 1 times [2021-11-20 23:44:45,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763766011] [2021-11-20 23:44:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:45,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:45,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:45,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:44:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:45,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:45,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:45,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:45,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:45,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763766011] [2021-11-20 23:44:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763766011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [435830996] [2021-11-20 23:44:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:45,815 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:45,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:45,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:45,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-20 23:44:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:45,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:45,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:46,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [435830996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:46,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065171554] [2021-11-20 23:44:46,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:46,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:46,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:46,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:46,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:44:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:44:46,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 23:44:46,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 23:44:46,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065171554] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 23:44:46,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-20 23:44:46,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5, 3] total 10 [2021-11-20 23:44:46,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591967161] [2021-11-20 23:44:46,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:46,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:44:46,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:46,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:44:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:46,311 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:44:46,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:46,330 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-20 23:44:46,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:44:46,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-20 23:44:46,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:46,333 INFO L225 Difference]: With dead ends: 44 [2021-11-20 23:44:46,333 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 23:44:46,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:46,336 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:46,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:44:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 23:44:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-20 23:44:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-20 23:44:46,349 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2021-11-20 23:44:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:46,352 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-20 23:44:46,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:44:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-20 23:44:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 23:44:46,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:46,355 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:46,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:46,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:46,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:46,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:46,957 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1949475587, now seen corresponding path program 1 times [2021-11-20 23:44:46,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:46,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853974580] [2021-11-20 23:44:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:46,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:46,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:46,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:44:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:47,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:44:47,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:44:47,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853974580] [2021-11-20 23:44:47,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853974580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196068034] [2021-11-20 23:44:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:47,265 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:47,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:47,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-20 23:44:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:47,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:47,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:44:47,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 23:44:47,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1196068034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:47,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503297251] [2021-11-20 23:44:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:47,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:47,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:47,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 23:44:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:47,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:44:47,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 23:44:47,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 23:44:47,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503297251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:44:47,828 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-20 23:44:47,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-20 23:44:47,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771584738] [2021-11-20 23:44:47,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:44:47,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:44:47,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:44:47,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:47,830 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:47,853 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-20 23:44:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:44:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-11-20 23:44:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:47,855 INFO L225 Difference]: With dead ends: 42 [2021-11-20 23:44:47,856 INFO L226 Difference]: Without dead ends: 29 [2021-11-20 23:44:47,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:44:47,859 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:47,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:44:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-20 23:44:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-20 23:44:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-20 23:44:47,869 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2021-11-20 23:44:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:47,871 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-20 23:44:47,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:44:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-20 23:44:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 23:44:47,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:47,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:47,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:48,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:48,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 23:44:48,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:44:48,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash 285795001, now seen corresponding path program 1 times [2021-11-20 23:44:48,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:48,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239959490] [2021-11-20 23:44:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:48,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:48,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:48,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:44:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:48,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:48,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 23:44:48,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 23:44:48,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239959490] [2021-11-20 23:44:48,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239959490] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:48,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1301670331] [2021-11-20 23:44:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:48,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:48,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:48,810 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:48,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-20 23:44:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:48,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:48,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 23:44:49,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-20 23:44:49,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1301670331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:49,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341415651] [2021-11-20 23:44:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:44:49,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:49,160 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:49,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 23:44:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:44:49,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:44:49,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 23:44:49,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:49,437 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:44:49,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341415651] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:49,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:44:49,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2021-11-20 23:44:49,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43614737] [2021-11-20 23:44:49,438 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:49,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 23:44:49,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 23:44:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:44:49,440 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:44:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:49,650 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2021-11-20 23:44:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:44:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2021-11-20 23:44:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:49,653 INFO L225 Difference]: With dead ends: 65 [2021-11-20 23:44:49,653 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 23:44:49,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-20 23:44:49,654 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:49,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:44:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 23:44:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-20 23:44:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-20 23:44:49,662 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2021-11-20 23:44:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:49,662 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-20 23:44:49,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:44:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-20 23:44:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 23:44:49,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:49,665 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:49,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:49,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:50,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:50,277 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1724337221, now seen corresponding path program 2 times [2021-11-20 23:44:50,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:50,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654384625] [2021-11-20 23:44:50,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:44:50,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:50,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:50,279 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:44:50,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:44:50,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:50,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:44:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:44:50,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:44:50,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:50,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654384625] [2021-11-20 23:44:50,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654384625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1818279780] [2021-11-20 23:44:50,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:44:50,823 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:50,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:50,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-20 23:44:50,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:44:50,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:50,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 23:44:51,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:44:51,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-20 23:44:51,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1818279780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:51,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127000051] [2021-11-20 23:44:51,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:44:51,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:51,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:51,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 23:44:51,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:44:51,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:51,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:44:51,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-20 23:44:51,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-20 23:44:51,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127000051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:51,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:44:51,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-20 23:44:51,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680214480] [2021-11-20 23:44:51,736 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:51,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 23:44:51,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 23:44:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-20 23:44:51,738 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 23:44:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:52,472 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2021-11-20 23:44:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 23:44:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-11-20 23:44:52,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:52,483 INFO L225 Difference]: With dead ends: 95 [2021-11-20 23:44:52,483 INFO L226 Difference]: Without dead ends: 67 [2021-11-20 23:44:52,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:44:52,485 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:52,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 319 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:44:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-20 23:44:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-20 23:44:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-20 23:44:52,495 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 68 [2021-11-20 23:44:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:52,496 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-20 23:44:52,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 23:44:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-20 23:44:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-20 23:44:52,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:52,498 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:52,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:52,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:52,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:53,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:53,110 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 275281219, now seen corresponding path program 3 times [2021-11-20 23:44:53,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:53,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129946396] [2021-11-20 23:44:53,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:44:53,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:53,113 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:53,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 23:44:53,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:44:53,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:53,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:44:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:53,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:53,623 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:53,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129946396] [2021-11-20 23:44:53,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129946396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:53,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1631034973] [2021-11-20 23:44:53,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:44:53,624 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:53,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:53,625 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:53,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-20 23:44:53,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:44:53,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:53,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:44:53,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:54,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:54,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1631034973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:54,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5317020] [2021-11-20 23:44:54,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:44:54,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:54,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:54,158 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:54,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 23:44:54,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-20 23:44:54,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:54,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:44:54,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:54,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-20 23:44:54,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5317020] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:54,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:44:54,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2021-11-20 23:44:54,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103215] [2021-11-20 23:44:54,805 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:44:54,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 23:44:54,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:44:54,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 23:44:54,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-20 23:44:54,807 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:44:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:44:55,143 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-20 23:44:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 23:44:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 92 [2021-11-20 23:44:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:44:55,146 INFO L225 Difference]: With dead ends: 114 [2021-11-20 23:44:55,146 INFO L226 Difference]: Without dead ends: 79 [2021-11-20 23:44:55,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-11-20 23:44:55,147 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:44:55,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 196 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:44:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-20 23:44:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-20 23:44:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:44:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-20 23:44:55,159 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 92 [2021-11-20 23:44:55,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:44:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-20 23:44:55,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 23:44:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-20 23:44:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-20 23:44:55,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:44:55,163 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 14, 14, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:44:55,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:55,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:55,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:44:55,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:55,773 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:44:55,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:44:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2141889097, now seen corresponding path program 4 times [2021-11-20 23:44:55,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:44:55,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137479953] [2021-11-20 23:44:55,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:44:55,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:44:55,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:44:55,776 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:44:55,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:44:55,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:44:55,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:55,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:44:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-20 23:44:56,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-20 23:44:57,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:44:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137479953] [2021-11-20 23:44:57,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137479953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1247321681] [2021-11-20 23:44:57,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:44:57,185 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:44:57,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:44:57,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:44:57,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-20 23:44:57,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:44:57,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:57,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 23:44:57,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-20 23:44:57,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:44:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-20 23:44:58,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1247321681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:44:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840314320] [2021-11-20 23:44:58,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:44:58,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:44:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:44:58,027 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:44:58,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 23:44:58,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:44:58,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:44:58,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 23:44:58,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:44:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 444 proven. 100 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-11-20 23:44:58,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:45:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-20 23:45:00,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840314320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:45:00,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:45:00,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 13, 14] total 55 [2021-11-20 23:45:00,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565577064] [2021-11-20 23:45:00,094 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:45:00,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-20 23:45:00,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:45:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-20 23:45:00,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 23:45:00,098 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:45:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:45:06,044 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2021-11-20 23:45:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-20 23:45:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-11-20 23:45:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:45:06,049 INFO L225 Difference]: With dead ends: 183 [2021-11-20 23:45:06,049 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 23:45:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1187, Invalid=5133, Unknown=0, NotChecked=0, Total=6320 [2021-11-20 23:45:06,054 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:45:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 562 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:45:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 23:45:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-20 23:45:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 23:45:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2021-11-20 23:45:06,068 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 128 [2021-11-20 23:45:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:45:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2021-11-20 23:45:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 23:45:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2021-11-20 23:45:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-20 23:45:06,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:45:06,075 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:45:06,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 23:45:06,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-20 23:45:06,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:45:06,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:45:06,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:45:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:45:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 906527935, now seen corresponding path program 5 times [2021-11-20 23:45:06,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:45:06,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144055499] [2021-11-20 23:45:06,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 23:45:06,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:45:06,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:45:06,691 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:45:06,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 23:45:08,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-20 23:45:08,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:45:09,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 23:45:09,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:45:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2028 proven. 484 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2021-11-20 23:45:09,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:45:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 0 proven. 2516 refuted. 0 times theorem prover too weak. 2923 trivial. 0 not checked. [2021-11-20 23:45:12,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:45:12,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144055499] [2021-11-20 23:45:12,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144055499] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:45:12,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804602603] [2021-11-20 23:45:12,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 23:45:12,220 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:45:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:45:12,220 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:45:12,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03e42616-46ee-437b-b36a-7eeb84c449f5/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process