./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/res1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh --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 f274a5aba9f5a53aba1b5bf0fd0b9cf2990c13e825cbbe6f7043cc6fa5a18df6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:23:16,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:23:16,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:23:16,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:23:16,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:23:16,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:23:16,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:23:16,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:23:16,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:23:16,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:23:16,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:23:16,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:23:16,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:23:16,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:23:16,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:23:16,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:23:16,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:23:16,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:23:16,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:23:16,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:23:16,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:23:16,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:23:16,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:23:16,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:23:16,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:23:16,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:23:16,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:23:16,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:23:16,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:23:16,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:23:16,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:23:16,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:23:16,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:23:16,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:23:16,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:23:16,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:23:16,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:23:16,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:23:16,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:23:16,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:23:16,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:23:16,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:23:16,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:23:16,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:23:16,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:23:16,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:23:16,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:23:16,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:23:16,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:23:16,181 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:23:16,182 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:23:16,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:23:16,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:23:16,182 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:23:16,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:23:16,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:23:16,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:23:16,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:23:16,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:23:16,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f274a5aba9f5a53aba1b5bf0fd0b9cf2990c13e825cbbe6f7043cc6fa5a18df6 [2022-12-14 05:23:16,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:23:16,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:23:16,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:23:16,375 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:23:16,375 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:23:16,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-fpi/res1.c [2022-12-14 05:23:19,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:23:19,170 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:23:19,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/sv-benchmarks/c/array-fpi/res1.c [2022-12-14 05:23:19,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/data/0e0345fa5/4b6f27c3de5f4709aa77826087a2b27d/FLAGb0d08d0f9 [2022-12-14 05:23:19,191 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/data/0e0345fa5/4b6f27c3de5f4709aa77826087a2b27d [2022-12-14 05:23:19,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:23:19,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:23:19,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:23:19,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:23:19,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:23:19,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25301b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19, skipping insertion in model container [2022-12-14 05:23:19,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:23:19,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:23:19,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/sv-benchmarks/c/array-fpi/res1.c[587,600] [2022-12-14 05:23:19,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:23:19,359 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:23:19,368 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/sv-benchmarks/c/array-fpi/res1.c[587,600] [2022-12-14 05:23:19,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:23:19,384 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:23:19,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19 WrapperNode [2022-12-14 05:23:19,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:23:19,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:23:19,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:23:19,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:23:19,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,410 INFO L138 Inliner]: procedures = 17, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2022-12-14 05:23:19,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:23:19,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:23:19,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:23:19,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:23:19,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:23:19,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:23:19,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:23:19,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:23:19,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (1/1) ... [2022-12-14 05:23:19,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:23:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:19,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:23:19,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:23:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:23:19,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:23:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:23:19,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:23:19,537 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:23:19,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:23:19,659 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:23:19,703 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:23:19,704 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 05:23:19,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:23:19 BoogieIcfgContainer [2022-12-14 05:23:19,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:23:19,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:23:19,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:23:19,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:23:19,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:23:19" (1/3) ... [2022-12-14 05:23:19,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f31f625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:23:19, skipping insertion in model container [2022-12-14 05:23:19,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:23:19" (2/3) ... [2022-12-14 05:23:19,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f31f625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:23:19, skipping insertion in model container [2022-12-14 05:23:19,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:23:19" (3/3) ... [2022-12-14 05:23:19,713 INFO L112 eAbstractionObserver]: Analyzing ICFG res1.c [2022-12-14 05:23:19,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:23:19,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:23:19,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:23:19,771 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a7c703d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:23:19,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:23:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:23:19,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:19,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:19,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:19,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1860276480, now seen corresponding path program 1 times [2022-12-14 05:23:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:19,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451094332] [2022-12-14 05:23:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:20,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:20,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451094332] [2022-12-14 05:23:20,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451094332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:23:20,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:23:20,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:23:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738504648] [2022-12-14 05:23:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:23:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:23:20,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:23:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:23:20,075 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:20,117 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2022-12-14 05:23:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:23:20,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 05:23:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:20,125 INFO L225 Difference]: With dead ends: 22 [2022-12-14 05:23:20,125 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 05:23:20,127 INFO L412 NwaCegarLoop]: 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 [2022-12-14 05:23:20,131 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:20,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:23:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 05:23:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-12-14 05:23:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-12-14 05:23:20,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 8 [2022-12-14 05:23:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:20,167 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-12-14 05:23:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2022-12-14 05:23:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 05:23:20,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:20,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:20,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:23:20,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 509978442, now seen corresponding path program 1 times [2022-12-14 05:23:20,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:20,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299913266] [2022-12-14 05:23:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:23:20,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:20,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299913266] [2022-12-14 05:23:20,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299913266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:23:20,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:23:20,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:23:20,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853163969] [2022-12-14 05:23:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:23:20,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:23:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:20,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:23:20,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:23:20,247 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:20,276 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2022-12-14 05:23:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:23:20,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 05:23:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:20,277 INFO L225 Difference]: With dead ends: 18 [2022-12-14 05:23:20,277 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 05:23:20,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:23:20,278 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:20,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:23:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 05:23:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 05:23:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-12-14 05:23:20,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2022-12-14 05:23:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:20,282 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-12-14 05:23:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-12-14 05:23:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 05:23:20,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:20,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:23:20,283 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1718165419, now seen corresponding path program 1 times [2022-12-14 05:23:20,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:20,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812879749] [2022-12-14 05:23:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:21,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:21,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812879749] [2022-12-14 05:23:21,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812879749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:23:21,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185914420] [2022-12-14 05:23:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:21,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:21,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:23:21,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:23:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:21,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-14 05:23:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:23:21,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:23:21,271 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:23:21,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 05:23:21,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:23:21,418 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 28 [2022-12-14 05:23:21,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-12-14 05:23:21,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2022-12-14 05:23:21,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2022-12-14 05:23:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:21,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:23:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:22,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185914420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:23:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58479119] [2022-12-14 05:23:22,465 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:23:22,465 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:23:22,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:23:22,472 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:23:22,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,611 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:23:22,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:23:22,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:23:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:23:22,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:23:22,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:22,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:22,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:22,930 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:23:22,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:23:23,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:23,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:23,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:23,212 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:23:23,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:23:23,265 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:23,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:23,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:23,322 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:23:23,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:23:23,370 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:23,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:23,384 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:23:23,695 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '211#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:23:23,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:23:23,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:23,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-12-14 05:23:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390934177] [2022-12-14 05:23:23,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:23:23,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-14 05:23:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-14 05:23:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:23:23,698 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:24,061 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-12-14 05:23:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:23:24,061 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 05:23:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:24,061 INFO L225 Difference]: With dead ends: 19 [2022-12-14 05:23:24,061 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 05:23:24,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 05:23:24,062 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:24,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:23:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 05:23:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-12-14 05:23:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-12-14 05:23:24,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 12 [2022-12-14 05:23:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:24,066 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-12-14 05:23:24,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-12-14 05:23:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 05:23:24,066 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:24,066 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:24,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:23:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:24,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1723855813, now seen corresponding path program 2 times [2022-12-14 05:23:24,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:24,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408170395] [2022-12-14 05:23:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:24,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:23:24,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408170395] [2022-12-14 05:23:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408170395] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:23:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920032168] [2022-12-14 05:23:24,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:23:24,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:24,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:24,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:23:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:23:24,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:23:24,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:23:24,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:23:24,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:23:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:23:24,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:23:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:23:24,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920032168] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:23:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376949598] [2022-12-14 05:23:24,462 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:23:24,462 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:23:24,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:23:24,462 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:23:24,462 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,568 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:23:24,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:23:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:23:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:23:24,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:23:24,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:24,837 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:23:24,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:23:24,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:24,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:23:24,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:24,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:25,007 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:23:25,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:23:25,060 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:25,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:25,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:25,110 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:23:25,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:23:25,151 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:25,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:25,163 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:23:25,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '363#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:23:25,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:23:25,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:25,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-14 05:23:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393749760] [2022-12-14 05:23:25,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:23:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:23:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:23:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:23:25,398 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:25,487 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-12-14 05:23:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:23:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 05:23:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:25,488 INFO L225 Difference]: With dead ends: 36 [2022-12-14 05:23:25,488 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 05:23:25,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-12-14 05:23:25,489 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 14 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:23:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 05:23:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-12-14 05:23:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-12-14 05:23:25,493 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2022-12-14 05:23:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:25,493 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-14 05:23:25,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-12-14 05:23:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 05:23:25,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:25,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:25,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:23:25,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:25,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2001762416, now seen corresponding path program 3 times [2022-12-14 05:23:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194662449] [2022-12-14 05:23:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:23:25,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194662449] [2022-12-14 05:23:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194662449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:23:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411200969] [2022-12-14 05:23:25,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:23:25,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:25,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:25,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:23:25,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:23:25,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:23:25,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:23:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:23:25,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:23:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:23:25,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:23:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:23:25,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411200969] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:23:25,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175421273] [2022-12-14 05:23:25,871 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:23:25,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:23:25,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:23:25,872 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:23:25,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:25,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:25,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:25,981 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:23:25,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:23:25,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:25,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,103 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:23:26,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:23:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:23:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:23:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:26,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:26,356 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:23:26,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:23:26,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:26,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:23:26,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:26,505 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:23:26,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:23:26,545 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:26,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:26,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:26,586 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:23:26,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:23:26,631 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:26,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:26,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:23:26,834 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '554#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:23:26,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:23:26,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:26,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-14 05:23:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288058989] [2022-12-14 05:23:26,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:23:26,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 05:23:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 05:23:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 05:23:26,836 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:26,896 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-12-14 05:23:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 05:23:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 05:23:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:26,897 INFO L225 Difference]: With dead ends: 20 [2022-12-14 05:23:26,897 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 05:23:26,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:23:26,898 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:26,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:23:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 05:23:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 05:23:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-14 05:23:26,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 15 [2022-12-14 05:23:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:26,901 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-14 05:23:26,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:23:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-14 05:23:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:23:26,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:26,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:23:26,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 05:23:27,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:27,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1925428128, now seen corresponding path program 4 times [2022-12-14 05:23:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:23:27,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907226717] [2022-12-14 05:23:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:23:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:23:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:28,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:23:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907226717] [2022-12-14 05:23:28,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907226717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:23:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526503097] [2022-12-14 05:23:28,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:23:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:23:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:23:28,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:23:28,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:23:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:23:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-14 05:23:28,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:23:28,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,173 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:23:28,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2022-12-14 05:23:28,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:23:28,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-14 05:23:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,254 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 30 [2022-12-14 05:23:28,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,353 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-12-14 05:23:28,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-12-14 05:23:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-12-14 05:23:28,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2022-12-14 05:23:28,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2022-12-14 05:23:28,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2022-12-14 05:23:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:28,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2022-12-14 05:23:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:28,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:23:53,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:23:53,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526503097] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:23:53,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [826451818] [2022-12-14 05:23:53,417 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:23:53,417 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:23:53,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:23:53,418 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:23:53,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:23:53,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,573 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:23:53,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:23:53,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,751 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:23:53,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:23:53,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:23:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:23:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:23:53,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:53,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:54,026 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:23:54,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:23:54,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:54,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:54,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:23:54,263 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:23:54,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:23:54,318 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:54,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:54,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:23:54,369 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:23:54,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:23:54,418 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:23:54,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:23:54,431 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:23:55,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '755#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:23:55,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:23:55,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:23:55,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-12-14 05:23:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780833362] [2022-12-14 05:23:55,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:23:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 05:23:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:23:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 05:23:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1606, Unknown=9, NotChecked=0, Total=1806 [2022-12-14 05:23:55,054 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:05,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:24:11,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:24:13,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:24:29,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:31,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:33,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:35,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:38,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:40,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:24:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:45,761 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-14 05:24:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 05:24:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 05:24:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:45,762 INFO L225 Difference]: With dead ends: 36 [2022-12-14 05:24:45,762 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 05:24:45,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 55.0s TimeCoverageRelationStatistics Valid=390, Invalid=3018, Unknown=14, NotChecked=0, Total=3422 [2022-12-14 05:24:45,764 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 52 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:45,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 382 Invalid, 9 Unknown, 0 Unchecked, 20.9s Time] [2022-12-14 05:24:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 05:24:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2022-12-14 05:24:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-12-14 05:24:45,774 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 16 [2022-12-14 05:24:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-12-14 05:24:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-12-14 05:24:45,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:24:45,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:45,775 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:45,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:24:45,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:45,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:24:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash 440934800, now seen corresponding path program 5 times [2022-12-14 05:24:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:45,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420259997] [2022-12-14 05:24:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:24:46,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:46,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420259997] [2022-12-14 05:24:46,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420259997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:46,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480691834] [2022-12-14 05:24:46,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:24:46,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:46,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:46,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:46,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:24:46,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:24:46,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:24:46,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:24:46,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:24:46,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:24:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:24:46,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480691834] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:24:46,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [760746842] [2022-12-14 05:24:46,317 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:24:46,317 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:24:46,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:24:46,318 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:24:46,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:24:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,459 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:24:46,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:24:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:24:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:24:46,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:24:46,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:46,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:46,714 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:24:46,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:24:46,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:24:46,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:24:46,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:24:46,867 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:24:46,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:24:46,920 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:24:46,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:24:46,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:46,971 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:24:46,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:24:47,018 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:24:47,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:24:47,032 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:24:47,303 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '998#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:24:47,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:24:47,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:24:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-14 05:24:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008343879] [2022-12-14 05:24:47,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:24:47,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:24:47,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:24:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:24:47,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:24:47,305 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:47,431 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-12-14 05:24:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:24:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 05:24:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:47,432 INFO L225 Difference]: With dead ends: 45 [2022-12-14 05:24:47,432 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 05:24:47,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:24:47,434 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:47,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:24:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 05:24:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-12-14 05:24:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-14 05:24:47,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2022-12-14 05:24:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:47,441 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-14 05:24:47,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 05:24:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 05:24:47,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:47,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:47,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:24:47,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 05:24:47,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:24:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1940833243, now seen corresponding path program 6 times [2022-12-14 05:24:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212848090] [2022-12-14 05:24:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:47,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:24:47,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212848090] [2022-12-14 05:24:47,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212848090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881132937] [2022-12-14 05:24:47,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:24:47,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:47,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:47,748 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:47,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:24:47,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:24:47,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:24:47,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:24:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:24:47,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:24:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:24:47,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881132937] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:24:47,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [973335732] [2022-12-14 05:24:47,907 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:24:47,907 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:24:47,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:24:47,907 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:24:47,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:24:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:47,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:47,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:47,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,029 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:24:48,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:24:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:24:48,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:24:48,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:24:48,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:48,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:48,280 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:24:48,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:24:48,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:24:48,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:24:48,406 INFO L350 Elim1Store]: Elim1 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 68 treesize of output 67 [2022-12-14 05:24:48,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:24:48,462 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:24:48,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:24:48,521 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:24:48,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:24:48,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:48,578 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:24:48,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:24:48,633 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:24:48,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:24:48,647 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:24:48,957 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1244#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:24:48,957 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:24:48,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:24:48,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-14 05:24:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993911457] [2022-12-14 05:24:48,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:24:48,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:24:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:24:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:24:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:24:48,959 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:24:49,083 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-12-14 05:24:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 05:24:49,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 05:24:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:24:49,083 INFO L225 Difference]: With dead ends: 24 [2022-12-14 05:24:49,084 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 05:24:49,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:24:49,085 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:24:49,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:24:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 05:24:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 05:24:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-12-14 05:24:49,094 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2022-12-14 05:24:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:24:49,094 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-12-14 05:24:49,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:24:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-12-14 05:24:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 05:24:49,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:24:49,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:24:49,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:24:49,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 05:24:49,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:24:49,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:24:49,296 INFO L85 PathProgramCache]: Analyzing trace with hash 35953013, now seen corresponding path program 7 times [2022-12-14 05:24:49,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:24:49,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251137926] [2022-12-14 05:24:49,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:24:49,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:24:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:24:51,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:24:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251137926] [2022-12-14 05:24:51,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251137926] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:24:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111595026] [2022-12-14 05:24:51,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:24:51,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:24:51,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:24:51,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:24:51,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:24:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:24:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-14 05:24:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:24:51,292 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:24:51,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 05:24:51,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:24:51,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 05:24:51,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-12-14 05:24:51,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 05:24:51,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2022-12-14 05:24:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 72 [2022-12-14 05:24:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:51,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 76 [2022-12-14 05:24:52,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 89 [2022-12-14 05:24:52,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 84 [2022-12-14 05:24:52,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 82 [2022-12-14 05:24:52,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:24:52,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 88 [2022-12-14 05:24:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:24:52,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 84 [2022-12-14 05:24:52,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 81 [2022-12-14 05:24:52,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 31 [2022-12-14 05:24:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:24:53,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:27:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:27:07,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111595026] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:27:07,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068733327] [2022-12-14 05:27:07,138 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:27:07,138 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:27:07,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:27:07,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:27:07,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:27:07,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,170 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:27:07,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 05:27:07,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,291 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:27:07,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:27:07,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:27:07,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:27:07,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:27:07,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:27:07,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:27:07,504 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:27:07,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:27:07,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:27:07,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:27:07,635 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:27:07,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 71 [2022-12-14 05:27:07,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:27:07,682 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:27:07,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:27:07,733 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:27:07,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:27:07,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:27:07,780 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:27:07,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:27:07,827 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:27:07,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:27:07,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:27:09,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1499#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:27:09,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:27:09,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:27:09,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 51 [2022-12-14 05:27:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137821248] [2022-12-14 05:27:09,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:27:09,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:27:09,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:27:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:27:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2663, Unknown=44, NotChecked=0, Total=2970 [2022-12-14 05:27:09,531 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:27:56,680 WARN L233 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 196 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:28:17,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:19,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:21,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:23,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:25,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:27,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:29,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:32,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:34,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:36,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:39,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:41,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:43,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:45,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:47,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:49,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:51,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:53,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:55,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:57,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:28:59,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:01,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:03,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:05,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:07,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:09,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:12,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:14,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:17,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:29:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:19,290 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-12-14 05:29:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 05:29:19,291 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-14 05:29:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:19,291 INFO L225 Difference]: With dead ends: 37 [2022-12-14 05:29:19,291 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 05:29:19,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 199.8s TimeCoverageRelationStatistics Valid=532, Invalid=4810, Unknown=60, NotChecked=0, Total=5402 [2022-12-14 05:29:19,292 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 51 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:19,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 540 Invalid, 27 Unknown, 0 Unchecked, 64.5s Time] [2022-12-14 05:29:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 05:29:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2022-12-14 05:29:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 05:29:19,302 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 20 [2022-12-14 05:29:19,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:19,302 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 05:29:19,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 05:29:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 05:29:19,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:19,303 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:19,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:29:19,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:19,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1114208027, now seen corresponding path program 8 times [2022-12-14 05:29:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:19,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511011636] [2022-12-14 05:29:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:29:19,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:19,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511011636] [2022-12-14 05:29:19,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511011636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:29:19,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864217465] [2022-12-14 05:29:19,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:29:19,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:19,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:19,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:19,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:29:19,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:29:19,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:29:19,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:29:19,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:29:19,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:29:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 05:29:19,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864217465] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:29:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376924529] [2022-12-14 05:29:19,929 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:29:19,930 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:29:19,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:29:19,930 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:29:19,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:29:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:19,971 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:29:19,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 05:29:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,151 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:29:20,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:29:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,327 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:29:20,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:29:20,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:29:20,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:20,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:20,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:20,556 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:29:20,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:29:20,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:29:20,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:29:20,678 INFO L350 Elim1Store]: Elim1 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 68 treesize of output 67 [2022-12-14 05:29:20,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:29:20,733 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:29:20,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:29:20,793 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:29:20,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:29:20,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:20,854 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:29:20,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:29:20,911 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:29:20,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:29:20,924 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:29:21,327 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1785#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:29:21,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:29:21,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:29:21,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-12-14 05:29:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657654806] [2022-12-14 05:29:21,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:29:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:29:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:29:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:29:21,329 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:21,523 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-12-14 05:29:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:29:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 05:29:21,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:21,524 INFO L225 Difference]: With dead ends: 54 [2022-12-14 05:29:21,524 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 05:29:21,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-12-14 05:29:21,525 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:21,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:29:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 05:29:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-12-14 05:29:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-14 05:29:21,538 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 21 [2022-12-14 05:29:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:21,538 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-14 05:29:21,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-14 05:29:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 05:29:21,538 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:21,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:21,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 05:29:21,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:21,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash -52345296, now seen corresponding path program 9 times [2022-12-14 05:29:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:21,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396399347] [2022-12-14 05:29:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:29:21,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:21,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396399347] [2022-12-14 05:29:21,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396399347] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:29:21,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028392938] [2022-12-14 05:29:21,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:29:21,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:21,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:21,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:29:21,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:29:21,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:29:21,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:29:21,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:29:22,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:29:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:29:22,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028392938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:29:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [823794770] [2022-12-14 05:29:22,095 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:29:22,095 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:29:22,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:29:22,095 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:29:22,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:29:22,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,138 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:29:22,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 05:29:22,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,278 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:29:22,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:29:22,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,455 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:29:22,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:29:22,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 05:29:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:22,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:22,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:22,657 INFO L321 Elim1Store]: treesize reduction 186, result has 18.4 percent of original size [2022-12-14 05:29:22,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 26 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 24 case distinctions, treesize of input 509 treesize of output 504 [2022-12-14 05:29:22,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:29:22,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:29:22,791 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-14 05:29:22,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 71 [2022-12-14 05:29:22,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:29:22,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:22,857 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:29:22,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:29:22,918 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:29:22,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:29:22,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:22,971 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:29:22,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:29:23,033 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:29:23,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:29:23,046 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:29:23,525 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2086#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:29:23,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:29:23,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:29:23,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-12-14 05:29:23,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382438630] [2022-12-14 05:29:23,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:29:23,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 05:29:23,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:23,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 05:29:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:29:23,527 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:23,711 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-12-14 05:29:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 05:29:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 05:29:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:23,712 INFO L225 Difference]: With dead ends: 28 [2022-12-14 05:29:23,712 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 05:29:23,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2022-12-14 05:29:23,713 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:23,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:29:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 05:29:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 05:29:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-14 05:29:23,730 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2022-12-14 05:29:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:23,730 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-14 05:29:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-14 05:29:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 05:29:23,730 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:23,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:23,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:29:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 05:29:23,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1623039552, now seen corresponding path program 10 times [2022-12-14 05:29:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:23,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221840262] [2022-12-14 05:29:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:26,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221840262] [2022-12-14 05:29:26,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221840262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:29:26,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019486697] [2022-12-14 05:29:26,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:29:26,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:26,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:26,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:29:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:26,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 109 conjunts are in the unsatisfiable core [2022-12-14 05:29:26,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:26,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:29:26,540 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:29:26,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 05:29:26,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-14 05:29:26,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 05:29:26,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 05:29:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:26,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 05:29:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2022-12-14 05:29:27,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 76 [2022-12-14 05:29:27,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 05:29:27,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 100 [2022-12-14 05:29:27,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:27,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 113 [2022-12-14 05:29:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 108 [2022-12-14 05:29:28,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:28,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2022-12-14 05:29:28,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 105 [2022-12-14 05:29:28,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:28,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 111 [2022-12-14 05:29:29,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 107 [2022-12-14 05:29:29,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:29,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:29,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 111 [2022-12-14 05:29:29,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 103 [2022-12-14 05:29:29,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 39 [2022-12-14 05:29:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:29,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:30:40,167 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int) (v_ArrVal_729 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_733 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_726) (+ .cse2 4 |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_727))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (< (+ v_ArrVal_742 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (* c_~N~0 2) 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_729 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))))))) is different from false [2022-12-14 05:36:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 16 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 05:36:40,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019486697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:36:40,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37569383] [2022-12-14 05:36:40,534 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:36:40,534 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:36:40,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:36:40,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:36:40,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:36:40,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,664 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:36:40,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:36:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,704 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:36:40,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 05:36:40,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,881 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:36:40,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:36:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:40,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:36:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:36:41,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,092 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:36:41,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:36:41,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:36:41,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:36:41,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:36:41,245 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:36:41,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:36:41,297 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:36:41,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:36:41,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:36:41,348 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:36:41,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:36:41,393 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:36:41,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:36:41,410 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:36:43,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2395#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:36:43,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:36:43,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:36:43,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 63 [2022-12-14 05:36:43,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166327800] [2022-12-14 05:36:43,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:36:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 05:36:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 05:36:43,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=3775, Unknown=109, NotChecked=128, Total=4422 [2022-12-14 05:36:43,105 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:36:54,107 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 160 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:37:05,592 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse18 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse2 (* c_~N~0 2))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse9 (+ .cse2 1)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse12 (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse15 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse17 (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse8 (+ 12 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (and (or (and (= (select .cse0 4) 1) (= (select .cse0 8) 1) (<= (+ .cse1 4) .cse2) (= (select .cse0 0) 1) (= (select .cse0 12) 1)) (<= .cse3 c_~N~0)) (<= (mod c_~N~0 4294967296) 536870911) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_713 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse4 (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (store .cse14 .cse15 v_ArrVal_713) .cse16 v_ArrVal_716) .cse17 v_ArrVal_717) (+ .cse18 12 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_719)))) (store .cse13 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse13 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse6 v_ArrVal_723) .cse7 v_ArrVal_726) .cse8 v_ArrVal_727))))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))) (not (<= v_ArrVal_729 (+ (select (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (< (+ v_ArrVal_742 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)) .cse9) (not (<= v_ArrVal_731 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10) v_ArrVal_729))) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)))) (not (<= v_ArrVal_713 1)) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))) (not (<= v_ArrVal_716 1)))))) (not (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (let ((.cse27 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (.cse28 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse24 (select .cse28 8)) (.cse22 (select .cse28 12)) (.cse23 (select .cse27 12)) (.cse19 (select .cse28 4)) (.cse21 (select .cse27 8)) (.cse25 (select .cse27 0)) (.cse20 (select .cse28 0)) (.cse26 (select .cse27 4))) (and (<= .cse19 1) (<= .cse20 1) (<= .cse21 1) (not (= |ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (<= .cse22 1) (<= .cse23 1) (not (= |ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (<= .cse24 1) (<= .cse25 1) (<= .cse1 (+ .cse24 .cse22 .cse23 .cse19 .cse21 .cse25 .cse26 .cse20)) (<= .cse26 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)))))) (<= (select .cse0 .cse6) 1) (<= (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (<= (select .cse0 .cse7) 1) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_742 Int) (v_ArrVal_731 Int) (v_ArrVal_740 Int)) (let ((.cse29 (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse14 .cse15 v_ArrVal_717) .cse16 v_ArrVal_719)))) (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse31 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse6 v_ArrVal_723) .cse7 v_ArrVal_726) .cse8 v_ArrVal_727))))) (let ((.cse30 (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_742 (+ (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) v_ArrVal_740))) (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10)))) (< (+ v_ArrVal_742 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)) .cse9) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_729 (+ (select (select .cse29 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)))) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (not (< .cse3 c_~N~0))) (< 3 c_~N~0) (or (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse32 (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store .cse14 .cse15 v_ArrVal_716) .cse16 v_ArrVal_717) .cse17 v_ArrVal_719)))) (store .cse34 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse34 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse6 v_ArrVal_723) .cse7 v_ArrVal_726) .cse8 v_ArrVal_727))))) (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_719 1)) (< (+ (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) v_ArrVal_742) .cse9) (not (<= v_ArrVal_729 (+ (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse32 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse10)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_716 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))))))))) (<= (select .cse0 .cse8) 1) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse39 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse36 (select .cse39 8)) (.cse35 (select .cse39 12)) (.cse37 (select .cse39 0)) (.cse38 (select .cse39 4))) (and (not (= |c_ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (<= .cse1 (+ .cse35 .cse36 .cse37 .cse38)) (<= .cse36 1) (<= .cse35 1) (<= .cse37 1) (<= .cse38 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))))))) is different from true [2022-12-14 05:37:07,649 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse14 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse5 (+ (* c_~N~0 2) 1)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse8 (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse13 (+ .cse14 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse4 (+ 12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (<= (mod c_~N~0 4294967296) 536870911) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_713 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse0 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (store .cse10 .cse11 v_ArrVal_713) .cse12 v_ArrVal_716) .cse13 v_ArrVal_717) (+ .cse14 12 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_719)))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse2 v_ArrVal_723) .cse3 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_729 (+ (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (< (+ v_ArrVal_742 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_731 (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) v_ArrVal_729))) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_713 1)) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_716 1)))))) (not (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (<= (select .cse15 .cse2) 1) (<= (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (<= (select .cse15 .cse3) 1) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_742 Int) (v_ArrVal_731 Int) (v_ArrVal_740 Int)) (let ((.cse16 (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse10 .cse11 v_ArrVal_717) .cse12 v_ArrVal_719)))) (store .cse18 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse18 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse2 v_ArrVal_723) .cse3 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_742 (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3) v_ArrVal_740))) (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (< (+ v_ArrVal_742 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_729 (+ (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (< 3 c_~N~0) (or (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse19 (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store .cse10 .cse11 v_ArrVal_716) .cse12 v_ArrVal_717) .cse13 v_ArrVal_719)))) (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse2 v_ArrVal_723) .cse3 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse20 (select .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse2)))) (not (<= v_ArrVal_719 1)) (< (+ (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4) v_ArrVal_742) .cse5) (not (<= v_ArrVal_729 (+ (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_716 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))))))))) (<= (select .cse15 .cse4) 1) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse26 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse23 (select .cse26 8)) (.cse22 (select .cse26 12)) (.cse24 (select .cse26 0)) (.cse25 (select .cse26 4))) (and (not (= |c_ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (+ .cse22 .cse23 .cse24 .cse25)) (<= .cse23 1) (<= .cse22 1) (<= .cse24 1) (<= .cse25 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|))))))))) is different from true [2022-12-14 05:37:14,923 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse17 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse5 (+ (* c_~N~0 2) 1)) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse2 (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ 12 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse16 (+ .cse17 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse0 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse10 .cse11 v_ArrVal_719)))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_729 (+ (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (< (+ v_ArrVal_742 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_727 1)))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (<= (mod c_~N~0 4294967296) 536870911) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_713 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse12 (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (store .cse10 .cse11 v_ArrVal_713) .cse15 v_ArrVal_716) .cse16 v_ArrVal_717) (+ .cse17 12 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_719)))) (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse14 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_729 (+ (select (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (< (+ v_ArrVal_742 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_731 (+ (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3) v_ArrVal_729))) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_713 1)) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_716 1)))))) (not (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int) (|ULTIMATE.start_main_~b~0#1.base| Int)) (let ((.cse26 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (.cse27 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse23 (select .cse27 8)) (.cse21 (select .cse27 12)) (.cse22 (select .cse26 12)) (.cse18 (select .cse27 4)) (.cse20 (select .cse26 8)) (.cse24 (select .cse26 0)) (.cse19 (select .cse27 0)) (.cse25 (select .cse26 4))) (and (<= .cse18 1) (<= .cse19 1) (<= .cse20 1) (not (= |ULTIMATE.start_main_~b~0#1.base| |ULTIMATE.start_main_~a~0#1.base|)) (<= .cse21 1) (<= .cse22 1) (not (= |ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (<= .cse23 1) (<= .cse24 1) (<= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (+ .cse23 .cse21 .cse22 .cse18 .cse20 .cse24 .cse25 .cse19)) (<= .cse25 1) (not (= |ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)))))) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_742 Int) (v_ArrVal_731 Int) (v_ArrVal_740 Int)) (let ((.cse28 (let ((.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse10 .cse11 v_ArrVal_717) .cse15 v_ArrVal_719)))) (store .cse30 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse30 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_742 (+ (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) v_ArrVal_740))) (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (< (+ v_ArrVal_742 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_729 (+ (select (select .cse28 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (< 3 c_~N~0) (or (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse31 (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store .cse10 .cse11 v_ArrVal_716) .cse15 v_ArrVal_717) .cse16 v_ArrVal_719)))) (store .cse33 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse33 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_719 1)) (< (+ (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4) v_ArrVal_742) .cse5) (not (<= v_ArrVal_729 (+ (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_716 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))))))))) is different from true [2022-12-14 05:37:17,289 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse17 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse5 (+ (* c_~N~0 2) 1)) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse2 (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ 12 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse16 (+ .cse17 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse0 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse10 .cse11 v_ArrVal_719)))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_729 (+ (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (< (+ v_ArrVal_742 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_727 1)))))) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_713 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse12 (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (store .cse10 .cse11 v_ArrVal_713) .cse15 v_ArrVal_716) .cse16 v_ArrVal_717) (+ .cse17 12 |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_719)))) (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse14 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_729 (+ (select (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (< (+ v_ArrVal_742 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_731 (+ (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3) v_ArrVal_729))) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_713 1)) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_716 1)))))) (not (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (or (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_742 Int) (v_ArrVal_731 Int) (v_ArrVal_740 Int)) (let ((.cse18 (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse10 .cse11 v_ArrVal_717) .cse15 v_ArrVal_719)))) (store .cse20 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse20 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse19 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_742 (+ (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) v_ArrVal_740))) (not (<= v_ArrVal_719 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (< (+ v_ArrVal_742 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_729 (+ (select (select .cse18 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))))))) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (or (not (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (forall ((v_ArrVal_719 Int) (v_ArrVal_729 Int) (v_ArrVal_717 Int) (v_ArrVal_716 Int) (v_ArrVal_727 Int) (v_ArrVal_738 Int) (v_ArrVal_726 Int) (v_ArrVal_735 Int) (v_ArrVal_723 Int) (v_ArrVal_733 Int) (v_ArrVal_721 Int) (v_ArrVal_731 Int) (v_ArrVal_742 Int) (v_ArrVal_740 Int)) (let ((.cse21 (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store .cse10 .cse11 v_ArrVal_716) .cse15 v_ArrVal_717) .cse16 v_ArrVal_719)))) (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_721) .cse8 v_ArrVal_723) .cse6 v_ArrVal_726) .cse4 v_ArrVal_727))))) (let ((.cse22 (select .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_740 (+ v_ArrVal_738 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_738)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_719 1)) (< (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_742)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4) v_ArrVal_742) .cse5) (not (<= v_ArrVal_729 (+ (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse21 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_723 1)) (not (<= v_ArrVal_731 (+ v_ArrVal_729 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_729)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse3)))) (not (<= v_ArrVal_742 (+ v_ArrVal_740 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_740)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6)))) (not (<= v_ArrVal_721 1)) (not (<= v_ArrVal_726 1)) (not (<= v_ArrVal_717 1)) (not (<= v_ArrVal_738 (+ v_ArrVal_735 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_735)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_735 (+ v_ArrVal_733 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_733)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2)))) (not (<= v_ArrVal_727 1)) (not (<= v_ArrVal_716 1)) (not (<= v_ArrVal_733 (+ v_ArrVal_731 (select (select (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_731)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))))))))) is different from true [2022-12-14 05:37:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:17,290 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-12-14 05:37:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 05:37:17,291 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 05:37:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:17,291 INFO L225 Difference]: With dead ends: 44 [2022-12-14 05:37:17,291 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 05:37:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1916 ImplicationChecksByTransitivity, 448.9s TimeCoverageRelationStatistics Valid=778, Invalid=6611, Unknown=113, NotChecked=870, Total=8372 [2022-12-14 05:37:17,293 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:37:17,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 705 Invalid, 0 Unknown, 50 Unchecked, 7.6s Time] [2022-12-14 05:37:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 05:37:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2022-12-14 05:37:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-12-14 05:37:17,312 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 24 [2022-12-14 05:37:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:17,312 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-12-14 05:37:17,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-12-14 05:37:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 05:37:17,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:17,313 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:17,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:37:17,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 05:37:17,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1225046064, now seen corresponding path program 11 times [2022-12-14 05:37:17,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011539321] [2022-12-14 05:37:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:17,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:17,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011539321] [2022-12-14 05:37:17,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011539321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:37:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817114551] [2022-12-14 05:37:17,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:37:17,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:17,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:17,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:37:17,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:37:17,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 05:37:17,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:37:17,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:37:17,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:17,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:37:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 05:37:18,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817114551] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:37:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1367079741] [2022-12-14 05:37:18,095 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:37:18,095 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:37:18,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:37:18,096 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:37:18,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:37:18,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,131 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:37:18,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 102 [2022-12-14 05:37:18,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,262 INFO L321 Elim1Store]: treesize reduction 143, result has 26.7 percent of original size [2022-12-14 05:37:18,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 75 [2022-12-14 05:37:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,403 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:37:18,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:37:18,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:37:18,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:18,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:18,597 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:37:18,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:37:18,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:18,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:18,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:18,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:18,753 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:37:18,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:37:18,803 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:37:18,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:37:18,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:18,853 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:37:18,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:37:18,906 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:37:18,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:37:18,918 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:37:19,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2742#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:37:19,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:37:19,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:37:19,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-12-14 05:37:19,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439178403] [2022-12-14 05:37:19,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:37:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:37:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:37:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:37:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:37:19,219 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 20 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:19,424 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2022-12-14 05:37:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:37:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 05:37:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:19,424 INFO L225 Difference]: With dead ends: 63 [2022-12-14 05:37:19,424 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 05:37:19,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2022-12-14 05:37:19,425 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:37:19,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:37:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 05:37:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2022-12-14 05:37:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-12-14 05:37:19,442 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 25 [2022-12-14 05:37:19,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:19,443 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-12-14 05:37:19,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-12-14 05:37:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 05:37:19,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:19,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:19,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 05:37:19,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:19,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1855463749, now seen corresponding path program 12 times [2022-12-14 05:37:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:19,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429757013] [2022-12-14 05:37:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:19,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 05:37:19,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429757013] [2022-12-14 05:37:19,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429757013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:37:19,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377210056] [2022-12-14 05:37:19,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:37:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:19,847 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:37:19,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:37:19,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:37:19,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:37:19,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:37:19,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 05:37:20,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:37:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 05:37:20,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377210056] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:37:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [145073851] [2022-12-14 05:37:20,147 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:37:20,147 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:37:20,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:37:20,147 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:37:20,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:37:20,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,276 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 05:37:20,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 05:37:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:37:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 05:37:20,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 113 [2022-12-14 05:37:20,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:20,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:20,538 INFO L321 Elim1Store]: treesize reduction 214, result has 11.9 percent of original size [2022-12-14 05:37:20,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 514 treesize of output 503 [2022-12-14 05:37:20,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:20,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:20,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:37:20,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:20,696 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 05:37:20,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 05:37:20,759 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:37:20,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:37:20,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:20,810 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 05:37:20,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 05:37:20,861 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 05:37:20,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 05:37:20,874 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:37:21,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3098#(and (<= 0 ~N~0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem15#1|) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (<= |ULTIMATE.start_main_#t~mem15#1| (* 2 ~N~0)) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-12-14 05:37:21,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:37:21,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:37:21,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-12-14 05:37:21,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303186702] [2022-12-14 05:37:21,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:37:21,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:37:21,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:37:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:37:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-12-14 05:37:21,209 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:37:21,396 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 05:37:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 05:37:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 05:37:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:37:21,397 INFO L225 Difference]: With dead ends: 32 [2022-12-14 05:37:21,397 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:37:21,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-12-14 05:37:21,397 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:37:21,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:37:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:37:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 05:37:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-12-14 05:37:21,417 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 27 [2022-12-14 05:37:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:37:21,417 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-12-14 05:37:21,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:37:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-14 05:37:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:37:21,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:37:21,418 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:37:21,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:37:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:37:21,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:37:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:37:21,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1685136747, now seen corresponding path program 13 times [2022-12-14 05:37:21,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:37:21,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352273217] [2022-12-14 05:37:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:37:21,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:37:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:37:25,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:37:25,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352273217] [2022-12-14 05:37:25,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352273217] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:37:25,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934500735] [2022-12-14 05:37:25,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:37:25,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:37:25,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:37:25,656 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:37:25,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ce7df37-6194-4156-9d88-17593b343595/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:37:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:37:25,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 129 conjunts are in the unsatisfiable core [2022-12-14 05:37:25,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:37:25,766 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 05:37:25,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 05:37:25,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:37:25,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-12-14 05:37:25,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-12-14 05:37:26,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 05:37:26,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 05:37:26,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-12-14 05:37:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 81 [2022-12-14 05:37:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 96 [2022-12-14 05:37:26,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:26,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 111 [2022-12-14 05:37:27,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 126 [2022-12-14 05:37:27,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 124 [2022-12-14 05:37:27,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:27,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 137 [2022-12-14 05:37:27,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:27,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:27,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 140 [2022-12-14 05:37:28,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:28,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 145 [2022-12-14 05:37:28,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 23 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 135 [2022-12-14 05:37:28,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:28,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 23 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 128 [2022-12-14 05:37:29,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 134 [2022-12-14 05:37:29,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 23 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2022-12-14 05:37:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:29,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 134 [2022-12-14 05:37:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:37:30,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:37:30,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 138 [2022-12-14 05:37:30,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 125 [2022-12-14 05:37:30,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 47 [2022-12-14 05:37:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:37:30,808 INFO L328 TraceCheckSpWp]: Computing backward predicates...